☆ 4.4 Review

Les Houches 2021-physics at TeV colliders: report on the standard model precision wishlist

JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS (2023)

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Next-to-leading order QCD corrections to diphoton-plus-jet production through gluon fusion at the LHC

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ZZ production at nNNLO plus PS with MINNLOPS

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Higgs boson production and quark scattering amplitudes at high energy through the next-to-next-to-leading power in quark mass

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PHYSICS LETTERS B (2022)

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PHYSICS LETTERS B (2022)

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PHYSICS LETTERS B (2022)

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Implementation of angularly ordered electroweak parton shower in Herwig 7

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On epsilon factorized differential equations for elliptic Feynman integrals

Hjalte Frellesvig

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A first look at the function space for planar two-loop six-particle Feynman integrals

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Top-quark mass effects in H plus jet and H+2 jets production

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JOURNAL OF HIGH ENERGY PHYSICS (2022)

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VH plus jet production in hadron-hadron collisions up to order αs3 in perturbative QCD

R. Gauld et al.

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Top-pair production at the LHC with MINNLOPS

Javier Mazzitelli et al.

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Quantum algorithm for Feynman loop integrals

Selomit Ramirez-Uribe et al.

Summary: This study presents a novel application of a quantum algorithm to Feynman loop integrals and utilizes Grover's algorithm to identify causal singular configurations of multiloop Feynman diagrams. The algorithm may also find application in solving problems involving directed acyclic graphs.

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Production and decay of the Higgs boson in association with top quarks

Daniel Stremmer et al.

Summary: This study reports on the calculation of next-to-leading order QCD corrections to Higgs boson production and decay associated with top quarks, considering hadronic processes resulting from top quark decays. Resonant and non-resonant Feynman diagrams, interferences, and off-shell effects are thoroughly investigated, along with the inclusion of Higgs boson decays in the narrow-width approximation. Different theoretical uncertainties and the impact of bottom-quark parton density contributions are also examined.

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Two-loop amplitude for mixed QCD-EW corrections to gg → Hg

Matteo Becchetti et al.

Summary: This article reports on the calculations of the two-loop amplitude for the mixed QCD-electroweak corrections to the process gg -> Hg, taking into account the exact dependence on the electroweak boson masses. The amplitude has been used in the computation of next-to-leading order mixed QCD-electroweak corrections to the Higgs-boson production rate.

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Two-loop leading colour helicity amplitudes for W±γ + j production at the LHC

Simon Badger et al.

Summary: We present the two-loop leading colour QCD helicity amplitudes for the process pp -> W( -> lv)gamma+ j. Simplified analytic expressions are obtained after considering permutations of a rational kinematic parametrization and multivariate partial fractioning. Efficient numerical evaluation of the two-loop colour and helicity summed finite remainders for physical kinematics is demonstrated.

JOURNAL OF HIGH ENERGY PHYSICS (2022)

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Leading-color two-loop amplitudes for four partons and a W boson in QCD

S. Abreu et al.

Summary: This study presents the leading-color two-loop QCD corrections for the scattering of four partons and a W boson. The amplitudes are obtained by assembling the planar two-loop helicity amplitudes and are used to determine the planar two-loop amplitudes for four partons and a Z/gamma* boson with a leptonic decay. The analytic expressions are obtained by setting up a dedicated Ansatz and solving the linear systems constructed in Vandermonde form.

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Two-loop non-planar hexa-box integrals with one massive leg

Adam Kardos et al.

Summary: Based on the Simplified Differential Equations approach, this paper presents results for the two-loop non-planar hexa-box families of master integrals. A new approach is introduced to obtain the boundary terms and establish a one-dimensional integral representation of the master integrals in terms of Generalised Polylogarithms, when the alphabet contains non-factorisable square roots. The results are relevant to the study of NNLO QCD corrections for W, Z and Higgs-boson production in association with two hadronic jets.

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Phenomenology of t(t)over-barj plus X production at the LHC

Simone Alioli et al.

Summary: We present phenomenological results for t(t) over barj + X production at the Large Hadron Collider, focusing on the cases where this process is considered as a signal. We discuss theoretical uncertainties and the dependence on input parameters in the computation. Reference predictions for the R. distribution are provided in three different mass renormalization schemes, with the MSR scheme applied for the first time. Our conclusions are particularly relevant for analyses aiming at extracting the top-quark mass from cross-section measurements.

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Duals of Feynman Integrals. Part II. Generalized unitarity

Simon Caron-Huot et al.

Summary: The first paper of this series introduces objects that are Poincare dual to Feynman integrals. We show how to use the pairing between these objects to express scattering amplitudes, and provide algorithms for computing the intersection numbers. We also examine the 4-dimensional limit of our formalism and provide prescriptions for extracting rational terms.

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Photon fragmentation in the antenna subtraction formalism

Thomas Gehrmann et al.

Summary: This article introduces a theoretical description method for photon production at particle colliders. The method takes into account both direct photon radiation and fragmentation processes, and explains the application of antenna subtraction method in the fragmentation processes.

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Lepton-pair production at hadron colliders at N3LO in QCD

Claude Duhr et al.

Summary: For the first time, we have computed the complete corrections to the strong coupling constant in the inclusive neutral-current Drell-Yan process, taking into account contributions from both photon and Z-boson exchange. Our analysis includes QCD corrections to the inclusive production cross section of an axial-vector boson to third order in strong coupling, considering the effects of non-decoupling of the top-quark mass. We have also presented predictions for the inclusive Drell-Yan process at the LHC, based on this order of QCD perturbation theory.

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Non-local slicing approaches for NNLO QCD in MCFM

John M. Campbell et al.

Summary: This article presents the implementation of several processes at Next-to-Next-to Leading Order (NNLO) accuracy in QCD in the parton-level Monte Carlo program MCFM. The article proposes a method to reduce power corrections by using two non-local slicing approaches under equal computational burden.

JOURNAL OF HIGH ENERGY PHYSICS (2022)

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Two-loop hexa-box integrals for non-planar five-point one-mass processes

Samuel Abreu et al.

Summary: This study presents the calculation of three distinct non-planar hexa-box topologies for five-point one-mass processes. The authors use numerical sampling and unitarity-cut techniques to efficiently solve each topology by obtaining a pure basis of master integrals and constructing the associated differential equation. Compact expressions for the alphabet of these non-planar integrals are provided, and properties of their symbol are discussed. The study also finds that the extended Steinmann relations are generally not satisfied. Furthermore, the authors solve the differential equations in terms of generalized power series and provide high-precision values in different regions of phase space, which can be used as boundary conditions for subsequent evaluations.

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Article Physics, Multidisciplinary

Targeting multi-loop integrals with neural networks

Ramon Winterhalder et al.

Summary: This article presents methods to optimize the contour of Feynman integrals by using optimized, global complex shifts and a normalizing flow, leading to a significant improvement in numerical precision.

SCIPOST PHYSICS (2022)

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Article Computer Science, Interdisciplinary Applications

FIESTA5: Numerical high-performance Feynman integral evaluation

A. V. Smirnov et al.

Summary: This paper introduces a new version of the FIESTA program, FIESTA5, which improves the speed of Feynman integral evaluation through various enhancements. The new release includes two new integrators, Quasi Monte Carlo and Tensor Train, and the old code of FIESTA4 has been upgraded and mostly rewritten. It also offers several essential improvements for complex integrations, enabling the program to produce previously impossible results.

COMPUTER PHYSICS COMMUNICATIONS (2022)

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Ansatze for scattering amplitudes from p-adic numbers and algebraic geometry

Giuseppe De Laurentis et al.

Summary: This article explores the simplification of rational coefficients of special functions in scattering amplitudes on singular surfaces, utilizing tools from algebraic geometry. By using p-adic numbers for numerical evaluations, the divergences of coefficients are characterized stably, leading to the construction of low-dimensional Ansatze for rational coefficients.

JOURNAL OF HIGH ENERGY PHYSICS (2022)

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Review Physics, Multidisciplinary

The SAGEX review on scattering amplitudes Chapter 4: Multi-loop Feynman integrals

Johannes Bluemlein et al.

Summary: This survey article presents the importance of analytic integration and simplification of multi-loop Feynman integrals in performing higher order perturbative calculations in the standard model of elementary particles. It also discusses the recent computer algebra and special function algorithms that are currently used or may be important in future precision calculations. These calculations are crucial for precision measurements and fundamental physics research.

JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL (2022)

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Review Physics, Multidisciplinary

The SAGEX review on scattering amplitudes*

Gabriele Travaglini et al.

Summary: This is an introduction to a series of review articles on scattering amplitudes in gauge theory, gravity, and superstring theory, aiming to provide an overview of the field from basic aspects to current research and developments in 2022.

JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL (2022)

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Review Physics, Multidisciplinary

The SAGEX review on scattering amplitudes Chapter 3: Mathematical structures in Feynman integrals

Samuel Abreu et al.

Summary: The article reviews the recent advances in understanding the analytic structure of multiloop Feynman integrals in dimensional regularisation. It provides an overview of modern approaches to computing Feynman integrals using differential equations and discusses the properties of the functions in the solutions. It also discusses the mathematical interpretation of dimensional regularisation in terms of the theory of twisted cohomology groups and how many well-known ideas about Feynman integrals arise naturally in this context.

JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL (2022)

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Article Physics, Nuclear

The PDF4LHC21 combination of global PDF fits for the LHC Run III*

Richard D. Ball et al.

Summary: This article presents an updated global PDF fit, PDF4LHC21, which combines the CT18, MSHT20, and NNPDF3.1 sets using Monte Carlo methods. The new combination shows modest uncertainties reduction for key LHC processes compared to its predecessor, PDF4LHC15. Extensive benchmark studies are performed to understand the differences between the three global PDF sets. The phenomenological implications of PDF4LHC21 for a selection of cross sections at the LHC are also studied.

JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS (2022)

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Third-Order Fiducial Predictions for Drell-Yan Production at the LHC

Xuan Chen et al.

Summary: This study presents a state-of-the-art calculation for the Drell-Yan process at hadron colliders, providing accurate theoretical predictions and experimental results. The research indicates that residual theory uncertainties can be significantly reduced and predictions can be improved by adjusting experimental cuts.

PHYSICAL REVIEW LETTERS (2022)

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Observation of WWW Production in pp Collisions at √s=13 TeV with the ATLAS Detector

G. Aad et al.

Summary: This Letter presents the observation of WWW production and its cross section measurement at the Large Hadron Collider. By selecting specific event types and applying a multivariate technique, events from WWW production are observed with a significance of 8.0 standard deviations. The measured inclusive WWW production cross section differs from the theoretical prediction.

PHYSICAL REVIEW LETTERS (2022)

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Z H production in gluon fusion at NLO in QCD

Long Chen et al.

Summary: In this paper, we present fully differential next-to-leading order results for Higgs production in association with a Z boson in gluon fusion. We compute the two-loop virtual contributions numerically using sector decomposition, accounting for full top-quark mass effects. At high pi, we also employ an analytic high-energy expansion to order (m(Z)(4), m(H)(4), m(t)(32)). Furthermore, we study the top-quark mass scheme uncertainty at large PT using the expanded results.

JOURNAL OF HIGH ENERGY PHYSICS (2022)

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NLO QCD corrections to full off-shell production of t(t)over-barZ including leptonic decays

Giuseppe Bevilacqua et al.

Summary: Motivated by ongoing searches for new physics in the top-quark sector at the Large Hadron Collider, this study calculates the NLO QCD corrections to the Standard Model process pp -> t (t) over barZ + X in the tetra-lepton decay channel. The calculation includes all resonant and non-resonant Feynman diagrams, interferences, and off-shell effects of the top quark, W and Z gauge bosons, as well as photon-induced contributions.

JOURNAL OF HIGH ENERGY PHYSICS (2022)

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Gluon fusion production at NLO: merging the transverse momentum and the high-energy expansions

Luigi Bellafronte et al.

Summary: This paper analytically evaluates the virtual corrections to gg -> HH and gg -> ZH by combining two different expansion methods. The results show that this approach can accurately calculate the virtual corrections with high precision while retaining the correlation with the top quark mass.

JOURNAL OF HIGH ENERGY PHYSICS (2022)

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NNLO event generation for pp → Zh → l+l-b(b)over-bar production in the SM effective field theory

Ulrich Haisch et al.

Summary: We study the associated production of Zh with Z -> l(+)l(-) and h -> b (b) over bar decays in hadronic collisions. Using the Standard Model effective field theory (SMEFT), we calculate the QCD corrections to this process and achieve NNLO+PS accuracy using the MiNNLOps method. Our analysis focuses on a subset of six SMEFT operators and estimates the impact of missing higher-order QCD effects associated with these operators. We provide a dedicated Monte Carlo (MC) code to evaluate the NNLO SMEFT corrections in the event generation and study their numerical impact on kinematic distributions.

JOURNAL OF HIGH ENERGY PHYSICS (2022)

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Single photon production at hadron colliders at NNLO QCD with realistic photon isolation

X. Chen et al.

Summary: Isolated photons at hadron colliders are defined by limiting the amount of hadronic energy around the candidate photon direction. The NNLO QCD corrections to isolated photon and photon-plus-jet production are computed, including contributions from photon radiation and parton-to-photon fragmentation processes. The results allow for reproducing the isolation prescription used in experimental measurements and comparing with LHC data. The impact of different photon isolation prescriptions on photon-plus-jet cross sections is quantified, and measurements of photon fragmentation functions at hadron colliders are discussed.

JOURNAL OF HIGH ENERGY PHYSICS (2022)

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Article Physics, Particles & Fields

NLO QCD and EW corrections to vector-boson scattering into W+W- at the LHC

Ansgar Denner et al.

Summary: This study presents a detailed analysis of the electroweak and QCD corrections to vector-boson scattering into a pair of off-shell W bosons decaying into different flavor leptons at the LHC. The electroweak corrections are found to be smaller, while the QCD corrections are relatively large due to a very restrictive definition of the fiducial phase space. The effects of the Higgs-boson resonance and photon-induced contributions were also considered in the analysis.

JOURNAL OF HIGH ENERGY PHYSICS (2022)

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Article Physics, Particles & Fields

On the NLO QCD corrections to gluon-initiated ZH production

Giuseppe Degrassi et al.

Summary: In this study, we compute the QCD corrections for the gg -> ZH process, including both two-loop virtual terms and real-emission contributions. We find that the corrections increase significantly at higher energies.

JOURNAL OF HIGH ENERGY PHYSICS (2022)

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Article Physics, Particles & Fields

Non-factorisable contribution to t-channel single-top production

Christian Bronnum-Hansen et al.

Summary: We compute the non-factorisable O(alpha(2)(s)) corrections to t-channel single-top quark production at the LHC, which arise due to interactions between heavy- and light-quark lines. These corrections appear for the first time at next-to-next-to-leading order in perturbative QCD. We find that they lead to a change of about half a percent in the single-top production cross section and relevant kinematic distributions.

JOURNAL OF HIGH ENERGY PHYSICS (2022)

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Article Physics, Particles & Fields

Mixed QCD-electroweak corrections to dilepton production at the LHC in the high invariant mass region

Federico Buccioni et al.

Summary: We computed the mixed QCD-electroweak corrections to high invariant mass neutral-current Drell-Yan production of massless leptons. Our results show unexpectedly large corrections at low invariant masses and an approximation to the product of QCD and electroweak corrections at higher invariant masses. These corrections increase with larger invariant mass and reduce the theoretical uncertainty related to the choice of electroweak input parameters.

JOURNAL OF HIGH ENERGY PHYSICS (2022)

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Two-loop mixed QCD-EW corrections to q(q)over-bar → Hg, qg → Hq, and (q)over-barg → H(q)over-bar

Marco Bonetti et al.

Summary: In this study, we calculate the two-loop mixed QCD-Electroweak corrections to important reactions, specifically focusing on the contribution of virtual light quarks. We compute the independent helicity amplitudes and form factors for this process, expressing them in terms of hyperlogarithms with algebraic arguments. The Feynman integrals are calculated through direct integration over Feynman parameters, and the results are presented using a basis of rational prefactors.

JOURNAL OF HIGH ENERGY PHYSICS (2022)

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Article Physics, Particles & Fields

Baikov representations, intersection theory, and canonical Feynman integrals

Jiaqi Chen et al.

Summary: This paper discusses the importance of canonical differential equations in the calculation of Feynman integrals in quantum field theories. It explores the relation and difference between canonical bases and d-dimensional d log-form integrands using the language of intersection theory. The generalized Baikov representation is used to construct d-dimensional d log-form integrands and convert them to Feynman integrals. The method provides a constructive approach to finding canonical bases and demonstrates its applicability to complex scattering amplitudes involving multiple physical scales.

JOURNAL OF HIGH ENERGY PHYSICS (2022)

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Article Physics, Particles & Fields

Measurements of the Higgs boson inclusive and differential fiducial cross-sections in the diphoton decay channel with pp collisions at √s=13 TeV with the ATLAS detector

G. Aad et al.

Summary: Accurate measurements of the inclusive and differential cross-sections for Higgs boson production, as well as the transverse momentum distribution, provide valuable insights into the properties and couplings of the Higgs boson.

JOURNAL OF HIGH ENERGY PHYSICS (2022)

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Article Physics, Particles & Fields

Next-to-next-to-leading order event generation for VH production with H → $$ b\overline{b} $$ decay

Silvia Zanoli et al.

JOURNAL OF HIGH ENERGY PHYSICS (2022)

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Article Physics, Particles & Fields

Higher-order EW corrections in ZZ and ZZj production at the LHC

Enrico Bothmann et al.

Summary: This paper studies the production of a pair of Z bosons at the LHC and includes EW corrections in theoretical predictions. By matching the exact NLO EW result with the resummed Sudakov logarithms, an improved NLO EW+ NLL EWsudexp result is obtained. The inclusion of the above EW corrections in MePs@Nlo event simulations is also discussed in the framework of the Sherpa event generator. Detailed phenomenological predictions for inclusive ZZ and ZZj production are presented, taking into account the dominant EW corrections through the EW virtual approximation and the (exponentiated) EW Sudakov logarithms.

JOURNAL OF HIGH ENERGY PHYSICS (2022)

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Article Physics, Particles & Fields

Vector boson pair production at one loop: analytic results for the process q(q)over-barl(l)over-barl′(l)over-bar′g

John M. Campbell et al.

Summary: We present compact analytic results for the one-loop amplitude of the process 0 -> q (q) over barl (l) over barl'(l) over bar 'g, which is relevant for the production of Z and W-bosons in association with a jet. Our calculation uses spinor-helicity simplification techniques and advancements in algebraic-geometry and number theory. The results are implemented in a numerical code and provide fast calculations.

JOURNAL OF HIGH ENERGY PHYSICS (2022)

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Article Physics, Particles & Fields

SMEFT predictions for gg → hh at full NLO QCD and truncation uncertainties

Gudrun Heinrich et al.

Summary: This article presents a calculation of NLO QCD corrections for Higgs-boson pair production in gluon fusion, taking into account the effects of anomalous couplings within the Standard Model Effective Field Theory (SMEFT). The impact of different truncation options of the EFT expansion in 1/Lambda and of double operator insertions on the total cross-section and the distribution of the invariant mass of the Higgs-boson pair at root s = 13 TeV are studied. The NLO corrections are implemented in the generator ggHH_SMEFT in the Powheg-Box-V2 framework.

JOURNAL OF HIGH ENERGY PHYSICS (2022)

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Article Physics, Multidisciplinary

Search for Higgs Boson Pair Production in the Four b Quark Final State in Proton-Proton Collisions at √s=13 TeV

A. Tumasyan et al.

Summary: This study focuses on searching for pairs of Higgs bosons produced via gluon and vector boson fusion, with a specific focus on the four b quark final state. The analysis is based on proton-proton collisions at a center-of-mass energy of 13 TeV, collected using the CMS detector at the LHC. No evidence is found for a deviation from the background-only hypothesis. Upper limits are set on the production cross section of Higgs boson pairs, as well as on the modifiers of the Higgs field self-coupling and the coupling between two Higgs bosons and two vector bosons.

PHYSICAL REVIEW LETTERS (2022)

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A fragmentation approach to jet flavor

Simone Caletti et al.

Summary: In quantum chromodynamics, the intuitive definition of partonic flavor is well-defined in the deep ultraviolet but requires an algorithm to define in the infrared. In order to bridge the gap between these two regimes, a novel and simple partonic jet flavor definition in the infrared is introduced. The evolution of the jet flavor from the ultraviolet to the infrared is described by a safe evolution equation, and quantitative agreement with simulations is demonstrated.

JOURNAL OF HIGH ENERGY PHYSICS (2022)

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Macaulay matrix for Feynman integrals: linear relations and intersection numbers

Vsevolod Chestnov et al.

Summary: This article elaborates on the connection between Gel'fand-Kapranov-Zelevinsky systems, de Rham theory for twisted cohomology groups, and Pfaffian equations for Feynman integrals. A novel and efficient algorithm is proposed to compute Macaulay matrices, which are used to derive Pfaffian systems of differential equations. The Pfaffian matrices are then utilized to obtain linear relations for A-hypergeometric (Euler) integrals and Feynman integrals through recurrence relations and projections by intersection numbers.

JOURNAL OF HIGH ENERGY PHYSICS (2022)

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Article Physics, Particles & Fields

NNLO plus PS Monte Carlo simulation of photon pair production with MINNLOPS

Alessandro Gavardi et al.

Summary: We present an NNLO QCD accurate event generator for direct photon pair production at hadron colliders, based on the MINNLOPS formalism. The generator allows for simulation of kinematic distributions with arbitrary fiducial cuts and has been modified to reduce the numerical impact of higher-order terms. By comparing the generated events with experimental data, we demonstrate the effectiveness of the generator.

JOURNAL OF HIGH ENERGY PHYSICS (2022)

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NNLO study of top-quark mass renormalization scheme uncertainties in Higgs boson production

Javier Mazzitelli

Summary: This study investigates the theoretical uncertainties in the calculation of Higgs boson production due to the ambiguity in the choice of renormalization scheme and scale for top-quark mass. The results show that these uncertainties are dominant in the case of off-shell Higgs production with large Higgs virtuality. While predictions within the on-shell and MSbar schemes differ significantly, they remain compatible within scale uncertainties, with differences decreasing as the perturbative expansion order increases.

JOURNAL OF HIGH ENERGY PHYSICS (2022)

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Article Physics, Particles & Fields

Local unitarity: cutting raised propagators and localising renormalisation

Zeno Capatti et al.

Summary: The study addresses two challenges in applying local unitarity representation to higher-loop computations, namely the generalization to graphs with raised propagators and the regularization of ultraviolet and spurious soft singularities. The researchers develop a hybrid (MS) over bar and On-Shell scheme using an all-order construction and a fully automated local renormalization procedure based on Bogoliubov's R-operation. They validate the new technology by calculating (semi-)inclusive results for two multi-leg processes and numerically computing the first physical NNLO cross-sections in momentum-space.

JOURNAL OF HIGH ENERGY PHYSICS (2022)

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Article Physics, Particles & Fields

NNLO QCD corrections in full colour for jet production observables at the LHC

X. Chen et al.

Summary: This study presents calculations using the antenna subtraction method in the NNLOJET framework for NNLO QCD corrections at full colour for several jet observables at the LHC. The impact of subleading colour contributions to the leading colour approximation is assessed for various observables and jet cone sizes, showing a potentially sizable role in the description of triply differential distributions.

JOURNAL OF HIGH ENERGY PHYSICS (2022)

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Article Astronomy & Astrophysics

Evaluation of multiloop multiscale Feynman integrals for precision physics

Ievgen Dubovyk et al.

Summary: This article presents a new semi-numerical approach for calculating multiloop multiscale Feynman integrals, which can bridge the gap between experimental requirements and theory. The approach is based on differential equations and numerical calculations, providing high precision and a mechanism for checking result accuracy.

PHYSICAL REVIEW D (2022)

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Article Astronomy & Astrophysics

Next-to-next-to-leading order QCD corrections to Wbb over line production at the LHC

Heribertus Bayu Hartanto et al.

Summary: We compute the theoretical predictions for the production of a W boson in association with a bottom-quark pair at hadron colliders at NNLO in QCD. We derive an analytic expression for the required two-loop five-particle amplitudes in the leading color approximation employing finite-field methods. Numerical results show an improvement in the perturbative convergence upon inclusion of NNLO QCD corrections.

PHYSICAL REVIEW D (2022)

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Article Astronomy & Astrophysics

Hbb vertex at four loops and hard matching coefficients in SCET for various currents

Amlan Chakraborty et al.

Summary: We calculate the four-loop corrections to the Higgs-bottom vertex in massless QCD and provide analytic results for all color structures. The infrared poles of the renormalized form factor match the predicted four-loop pattern. Additionally, we utilize the results of the form factors for Higgs-bottom, photon-quark, and Higgs-gluon to determine hard matching coefficients in soft-collinear effective theory up to four-loop accuracy.

PHYSICAL REVIEW D (2022)

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Article Physics, Particles & Fields

Doubly-polarized W Z hadronic cross sections at NLO QCD plus EW accuracy

Duc Ninh Le et al.

Summary: In this study, new results for next-to-leading order electroweak corrections to double polarization signals in the WZ production channel at LHC are presented. It is found that the EW corrections have the most significant impact on the transverse momentum distributions of doubly longitudinal polarization, with a reduction of about -10% compared to the NLO QCD prediction at p(T, e) approximately 200 GeV, which falls within the accessible energy range of the current LHC data.

EUROPEAN PHYSICAL JOURNAL C (2022)

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Angular coefficients in W plus j production at the LHC with high precision

Mathieu Pellen et al.

Summary: In this work, angular coefficients at NNLO QCD + NLO EW accuracy for finite transverse momentum W-boson at the LHC are provided for the first time. These corrections can reach up to 10% in certain regions of phase space and are accompanied by a significant reduction of the scale uncertainty. This work offers state-of-the-art theoretical input for W-boson mass measurements.

EUROPEAN PHYSICAL JOURNAL C (2022)

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Article Astronomy & Astrophysics

Same-hemisphere three-gluon-emission contribution to the zero-jettiness soft function at N3LO QCD

Daniel Baranowski et al.

Summary: The calculation of the three-gluon-emission contribution to the same-hemisphere part of the zero-jettiness soft function at next-to-next-to-next-to-leading order in perturbative QCD has been completed.

PHYSICAL REVIEW D (2022)

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Article Physics, Particles & Fields

Practical jet flavour through NNLO

Simone Caletti et al.

Summary: An infrared and collinear (IRC) safe definition of jet flavour is essential for accurate predictions in quantum chromodynamics at colliders. The existing flavour definitions for jets typically modify the jet algorithm to be sensitive to partonic flavour at each clustering stage, which is not practical for real data. We propose a novel approach to jet flavour that can be applied to any parton clustering algorithm, using Soft Drop grooming and JADE algorithm. We prove the IRC safety of this definition at NNLO, making it compatible with the most precise fixed-order calculations for jets.

EUROPEAN PHYSICAL JOURNAL C (2022)

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Article Astronomy & Astrophysics

Hadroproduction of four top quarks in the POWHEG BOX

Tomas Jezo et al.

Summary: In this study, a new Monte Carlo event generator for the hadronic production of four top quarks is presented. It includes subleading electroweak production channels and investigates various sources of theoretical uncertainties.

PHYSICAL REVIEW D (2022)

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Article Astronomy & Astrophysics

Hadronic production of top-quark pairs in association with a pair of leptons in the POWHEG BOX framework

Margherita Ghezzi et al.

Summary: In this study, we present an implementation of tt??t'+t'??? hadronic production in the POWHEG BOX framework, matched to parton-shower event generators at next-to-leading order in QCD. Our results show that off-shell effects in tt??t'+t'??? are generally small at the total cross section level, but can decrease the tail of the leptons' transverse momentum distributions by 10%-20%. These effects are visible beyond the scale uncertainty due to renormalization and factorization scale variation. Moreover, we find that accounting for top-quark decays with tree-level spin correlations also gives rise to 10%-20% effects in specific regions of the tt??t'+t'??? decayed final state.

PHYSICAL REVIEW D (2022)

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Article Physics, Particles & Fields

Fiducial perturbative power corrections within the qT subtraction formalism

Stefano Camarda et al.

Summary: The study considers higher-order QCD corrections to high-mass systems production in hadron collisions, within the transverse-momentum subtraction formalism. A method is presented to consistently remove the linear power corrections in the transverse-momentum which appears when applying fiducial kinematical cuts on the final state system. By implementing this method at the Large Hadron Collider, perturbative predictions are obtained that are in agreement with those obtained with local subtraction formalisms up to the NNLO and provide numerical accuracy at the permille level at the N3LO.

EUROPEAN PHYSICAL JOURNAL C (2022)

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Article Astronomy & Astrophysics

NLO electroweak and QCD corrections to the production of a photon with three charged lepton plus missing energy at the LHC

Huanfeng Cheng et al.

Summary: This paper investigates electroweak triboson production processes with at least one heavy gauge boson at the LHC. It explores indirect signals of beyond the SM physics by calculating distributions in different kinematic regions.

PHYSICAL REVIEW D (2022)

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Article Physics, Particles & Fields

Higgs boson production at the LHC: fast and precise predictions in QCD at higher orders

Stefano Camarda et al.

Summary: We introduce a new numerical program, HTurbo, which accurately predicts the production cross sections of Higgs bosons in a fast and precise manner. The program implements the perturbative QCD expansion and resummation of large logarithmic corrections, and includes the production and decay of Higgs bosons through gluon fusion and two-photon processes with complete dependence on the final-state kinematics. We benchmark our predictions against other numerical programs, HRes and HNNLO, and show that HTurbo is an improved reimplementation.

EUROPEAN PHYSICAL JOURNAL C (2022)

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Article Physics, Particles & Fields

The path to proton structure at 1% accuracy NNPDF Collaboration

Richard D. Ball et al.

Summary: We present NNPDF4.0, a new set of parton distribution functions (PDFs) based on a global dataset and machine learning techniques. The methodology includes the expansion of the dataset, optimization of hyperparameters, and the implementation of theoretical improvements. The results have been validated through closure tests and analyzed for their dependence on input choices. The implications of NNPDF4.0 on LHC processes have also been studied.

EUROPEAN PHYSICAL JOURNAL C (2022)

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Article Astronomy & Astrophysics

Multiloop corrections for collider processes using auxiliary mass flow

Xiao Liu et al.

Summary: This article presents a key improvement in the auxiliary mass flow method, which can compute Feynman integrals encountered in cutting-edge collider processes. The authors have successfully applied this method to compute integrals crucial for precision frontier in collider physics. These results serve as important building blocks and benchmarks for future studies of these processes.

PHYSICAL REVIEW D (2022)

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Article Astronomy & Astrophysics

Anomalous couplings in associated VH production with Higgs boson decay to massive b quarks at NNLO in QCD

Wojciech Bizon et al.

Summary: We have combined the NNLO QCD description of Higgs boson production with an electroweak vector boson and a similar description of Higgs boson decays into a pair of b quarks, as well as the anomalous couplings that modify the interactions between the Higgs and electroweak vector bosons. The resulting numerical code is a powerful tool for studying these anomalous couplings in the associated Higgs boson production process. By studying the impact of these anomalous couplings on cross sections and differential distributions, we show that with higher QCD precision, smaller anomalous couplings can be probed in regions where the effects of higher-dimensional operators in the Standard Model effective field theory are small and the effective field theory expansion is under control.

PHYSICAL REVIEW D (2022)

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Article Astronomy & Astrophysics

Modeling uncertainties of t(t)over-barW± multilepton signatures

G. Bevilacqua et al.

Summary: In this study, the theoretical uncertainties for multilepton signatures are investigated in light of recent discrepancies between modeling and measurements. The comparison is performed between the full off-shell calculation and its narrow-width approximation, as well as the on-shell t(t) over barW(+/-) calculation with spin correlations. The predictions for multilepton signatures at the LHC are studied for both NLO perturbative orders, and a method to incorporate full off-shell effects in the NLO computation is proposed.

PHYSICAL REVIEW D (2022)

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Article Astronomy & Astrophysics

Interplay between the loop-tree duality and helicity amplitudes

F. Driencourt-Mangin et al.

Summary: The spinor-helicity formalism and the loop-tree duality representation are two efficient methods in calculating scattering amplitudes in quantum field theory. This paper combines the spinor-helicity formalism with the loop-tree duality to analyze one- and two-loop scattering processes, focusing on the local UV renormalization of IR and UV finite helicity amplitudes. A fully automated numerical implementation is presented, which provides efficient expressions integrable in four space-time dimensions.

PHYSICAL REVIEW D (2022)

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Article Physics, Nuclear

Calculation of Feynman loop integration and phase-space integration via auxiliary mass flow

Xiao Liu et al.

Summary: The auxiliary-mass-flow (AMF) method, originally developed for Feynman loop integration, has been extended to handle integrals involving phase-space integration. By numerically solving differential equations with respect to the auxiliary mass, the flow of the auxiliary mass from infinity to the physical point is obtained. This method can be combined with the traditional differential-equation method for problems with multiple kinematic invariants, providing systematic boundary conditions and a highly nontrivial self-consistency check.

CHINESE PHYSICS C (2021)

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Article Physics, Particles & Fields

Four lepton production and the accuracy of QED FSR

Christian Guetschow et al.

Summary: The study highlighted the capacity of primary QED final-state resummation tools combined with electroweak virtual corrections to accurately reproduce next-to-leading order electroweak calculations in the four-charged-lepton final state. It was also observed that differences not directly related to resummation-induced higher-order effects were present in some cases, which might impact precision measurements. Overall, there was excellent agreement with fixed-order results.

EUROPEAN PHYSICAL JOURNAL C (2021)

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Article Computer Science, Interdisciplinary Applications

CARAVEL: A C plus plus framework for the computation of multi-loop amplitudes with numerical unitarity

S. Abreu et al.

Summary: CARAVEL is the first public version of a C++17 framework designed for computing multi-loop scattering amplitudes in quantum field theory using the numerical unitarity method. The framework consists of modules for various computations related to multi-loop amplitudes, showcasing functionalities through provided programs. Dependencies include Python, meson, and optional libraries such as Doxygen, Eigen, GiNaC, GMP, and Lapack.

COMPUTER PHYSICS COMMUNICATIONS (2021)

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Article Computer Science, Interdisciplinary Applications

DiffExp, a Mathematica package for computing Feynman integrals in terms of one-dimensional series expansions

Martijn Hidding

Summary: DiffExp is a Mathematica package designed for integrating families of Feynman integrals order-by-order in dimensional regularization, using one-dimensional series expansions based on differential equations. It provides a public implementation of series expansion methods for families of integrals, allowing high-precision numerical results to be obtained efficiently.

COMPUTER PHYSICS COMMUNICATIONS (2021)

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Correction Physics, Particles & Fields

Calculations for deep inelastic scattering using fast interpolation grid techniques at NNLO in QCD and the extraction of αs from HERA data (vol 79, 845, 2019)

D. Britzger et al.

EUROPEAN PHYSICAL JOURNAL C (2021)

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Article Astronomy & Astrophysics

Triphoton production at hadron colliders in NNLO QCD

Stefan Kallweit et al.

Summary: In this study, NNLO QCD corrections to the production of three isolated photons in hadronic collisions are presented at the fully differential level. The importance of NNLO corrections for describing ATLAS 8TeV data and future precision studies of triphoton production at higher collision energies is demonstrated through numerical results. The study confirms the indispensability of NNLO corrections for achieving accurate predictions in high-energy physics experiments.

PHYSICS LETTERS B (2021)

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Article Astronomy & Astrophysics

NLO QCD predictions for doubly-polarized WZ production at the LHC

Ansgar Denner et al.

Summary: This study focuses on the polarization of weak bosons in WZ production at the LHC, using the double-pole approximation and amplitude-level polarization separation. Results are compared between defining the polarization vectors in two different frames, presenting integrated and differential cross-sections in a realistic fiducial region.

PHYSICS LETTERS B (2021)

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Article Physics, Particles & Fields

Scale and isolation sensitivity of diphoton distributions at the LHC

Thomas Gehrmann et al.

Summary: Precision measurements of diphoton distributions at the LHC show tension with theory predictions at next-to-next-to-leading order in QCD. This tension comes from the approximation of experimental photon isolation and the choice of scales. By comparing predictions with alternative scale choices and isolation prescriptions, improved agreement with experimental data is observed, highlighting the underestimated sources of theoretical uncertainty in scale choice and isolation prescription.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Article Physics, Particles & Fields

Contribution of third generation quarks to two-loop helicity amplitudes for W boson pair production in gluon fusion

Christian Bronnum-Hansen et al.

Summary: In this study, we computed the contribution of third generation quarks to the two-loop amplitude for on-shell W boson pair production in gluon fusion process gg -> WW. The master integrals were efficiently evaluated by numerically solving ordinary differential equations, and plots were presented for the amplitude across partonic phase space along with reference values for two kinematic points.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Article Physics, Particles & Fields

Measurements of WH and ZH production in the H→bb decay channel in pp collisions at 13Te with the ATLAS detector

M. Aaboud et al.

Summary: Measurements of the Standard Model Higgs boson decaying into a bb pair and produced in association with a W or Z boson decaying into leptons using data from proton-proton collisions between 2015 and 2018 by the ATLAS detector were presented. The associated production of a Higgs boson with W or Z boson was established with expected significances, and cross-sections were measured as a function of the gauge boson's transverse momentum. The measurements were consistent with Standard Model expectations, with varying total uncertainties depending on the gauge boson transverse momentum regions.

EUROPEAN PHYSICAL JOURNAL C (2021)

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Article Physics, Particles & Fields

Measurements of pp → ZZ production cross sections and constraints on anomalous triple gauge couplings at √s=13 TeV

A. M. Sirunyan et al.

Summary: The production of Z boson pairs in proton-proton collisions at the CERN LHC was studied using the CMS detector, and the measured cross sections are consistent with standard model predictions. Limits on anomalous ZZZ and ZZ gamma couplings were set using the invariant mass distribution of the four-lepton system.

EUROPEAN PHYSICAL JOURNAL C (2021)

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Article Physics, Multidisciplinary

Exact Top-Quark Mass Dependence in Hadronic Higgs Production

M. Czakon et al.

Summary: In this Letter, the impact of the finite top-quark mass on the inclusive Higgs production cross section at higher perturbative orders was calculated at next-to-next-to-leading order QCD. The overall effect was found to be -0.26% at a pp collider energy of 13 TeV, and -0.1% at 8 TeV, eliminating one of the main theoretical uncertainties to inclusive Higgs production cross section at the LHC.

PHYSICAL REVIEW LETTERS (2021)

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Article Physics, Multidisciplinary

Next-to-Next-to-Leading Order Study of Three-Jet Production at the LHC

Michal Czakon et al.

Summary: This study utilizes multijet rates to explore quantum chromodynamics (QCD), calculating NNLO QCD corrections for three-jet observables and three-to-two jet ratios. It demonstrates a significant reduction in the dependence of these observables on factorization and renormalization scales. This proof-of-principle computation represents a milestone in perturbative QCD.

PHYSICAL REVIEW LETTERS (2021)

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Article Physics, Multidisciplinary

Two-Loop Helicity Amplitudes for Diphoton Plus Jet Production in Full Color

Bakul Agarwal et al.

Summary: This study presented the two-loop QCD amplitudes for the production of two photons and a jet at hadron colliders with full-color dependence, marking the first time radiative corrections for a five-particle scattering process beyond the leading-color approximation have been computed at this perturbative order in QCD. The results are crucial for ensuring reliable predictions with unprecedented precision for diphoton production at hadron colliders, and the methodologies described in the study simplify the calculation and can be applied to a wider range of five-point scattering processes.

PHYSICAL REVIEW LETTERS (2021)

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Article Physics, Multidisciplinary

A toolbox for qT and 0-jettiness subtractions at N3LO

Georgios Billis et al.

Summary: We derive the leading-power singular terms at three loops for both q(T) and 0-jettiness and provide the complete set of differential subtraction terms. The results include the full threeloop structure of relevant beam and soft functions. By exploiting consistency relations, we obtain results for the q(T) and T-0 beam function coefficients at (NLO)-L-3 and estimate the size of unknown terms beyond threshold.

EUROPEAN PHYSICAL JOURNAL PLUS (2021)

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Article Physics, Particles & Fields

Decomposition of Feynman integrals by multivariate intersection numbers

Hjalte Frellesvig et al.

Summary: We present a new approach for decomposing Feynman integrals onto a basis of master integrals by projections and deriving the differential equations satisfied by them using multivariate intersection numbers. Our recursive algorithm for calculating these numbers and three different decomposition methods (straight, bottom-up, top-down) showcase the synthesis of intersection-theory concepts with unitarity-based methods. Computation examples illustrate the potential applications to generic multi-loop integrals.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Article Physics, Particles & Fields

Bottom-quark production at hadron colliders: fully differential predictions in NNLO QCD

Stefano Catani et al.

Summary: The study provides a first fully differential calculation of the NNLO QCD radiative corrections to the production of bottom-quark pairs at hadron colliders. The calculations show significant reduction in perturbative uncertainties and highlight the importance of including NNLO corrections for an accurate theoretical description of the process. Comparison with experimental results is also performed to validate the predictions.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Article Physics, Particles & Fields

ZH production in gluon fusion: two-loop amplitudes with full top quark mass dependence

Long Chen et al.

Summary: The study presents results on two-loop helicity amplitudes contributing to NLO QCD corrections in Higgs boson production with a Z-boson in gluon fusion. These two-loop integrals, involving massive top quarks, were calculated numerically. Results show the interference of the finite part of the two-loop amplitudes with the Born amplitude as a function of two kinematic invariants.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Article Physics, Particles & Fields

Virtual corrections to gg → ZH in the high-energy and large-mt limits

Joshua Davies et al.

Summary: By computing, we demonstrate that using Pade approximants can lead to precise results close to the top quark pair threshold, under the conditions of high energy and large mt.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Article Physics, Particles & Fields

Analytic integration of soft and collinear radiation in factorised QCD cross sections at NNLO

Lorenzo Magnea et al.

Summary: Within the framework of local analytic sector subtraction, this paper presents the full analytic integration of double-real and real-virtual local infrared counterterms that enter NNLO QCD computations with any number of massless final-state partons. The authors show that a careful choice of phase-space mappings leads to simple analytic results, including non-singular terms, that can be obtained with conventional integration techniques.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Article Physics, Particles & Fields

Single-top-quark production in the t-channel at NNLO

John Campbell et al.

Summary: This study presents a calculation of t-channel single-top-quark production and decay in the five-flavor scheme at NNLO, resolving a disagreement between previous calculations. The use of NNLO corrections is crucial for precise identification of the t-channel process.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Article Physics, Particles & Fields

The analytic leading color contribution to the Higgs-gluon form factor in QCD at NNLO

Mario Prausa et al.

Summary: In this article, an analytic three-loop result for the leading color contribution to the Higgs-gluon form factor in QCD is presented. The focus is on evaluating the relevant Feynman integrals with a special emphasis on the elliptic sector.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Article Physics, Particles & Fields

A comparative study of Higgs boson production from vector-boson fusion

A. Buckley et al.

Summary: The study focuses on exploring high transverse momentum Higgs boson production at the Large Hadron Collider, comparing precision calculations at different QCD orders and analyzing backgrounds and strategies for VBF Higgs boson production. The results show the importance of balancing between enhancing VBF signal and reducing efficiency loss, as well as the impacts of jet radius and tagging jets.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Article Physics, Particles & Fields

Virtual QCD corrections to gluon-initiated diphoton plus jet production at hadron colliders

Simon Badger et al.

Summary: This study presents an analytic computation of the gluon-initiated contribution to diphoton plus jet production at hadron colliders up to two loops in QCD. The researchers reconstruct the analytic form of the finite remainders and provide a fast and stable implementation for the interference between one-loop and two-loop finite remainders in C++.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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NLO EW and QCD corrections to polarized ZZ production in the four-charged-lepton channel at the LHC

Ansgar Denner et al.

Summary: This study presents a method for calculating NLO accurate polarized cross-sections for the production of two polarized Z bosons at the LHC, including NLO EW corrections for the first time and combining them with NLO QCD corrections and contributions from the gluon-induced process. This provides a theoretical foundation for experimental studies and tests of the electroweak-symmetry-breaking mechanism in nature.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Full NLO predictions for vector-boson scattering into Z bosons and its irreducible background at the LHC

Ansgar Denner et al.

Summary: Vector-boson scattering into two Z bosons at the LHC is a key channel for exploring the electroweak sector of the Standard Model. The study presents full next-to-leading-order predictions for this process, including all electroweak and QCD contributions, with particular focus on newly computed corrections. The results are presented in the form of cross sections and differential distributions.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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B-hadron production in NNLO QCD: application to LHC t(t)over-bar events with leptonic decays

Michal Czakon et al.

Summary: For the first time, NNLO QCD corrections to identified heavy hadron production at hadron colliders have been calculated, providing predictions for several differential distributions of B hadrons in t (t) over bar events at the LHC. The results may be extended to other processes, such as open or associated B and charm production, and there is potential for extracting heavy flavor fragmentation functions from LHC data.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Article Physics, Particles & Fields

On non-factorisable contributions to t-channel single-top production

Christian Bronnum-Hansen et al.

Summary: The non-factorisable contribution to the two-loop helicity amplitude for t-channel single-top production was computed, using analytic reduction to master integrals and the auxiliary mass flow method for numerical evaluation. The impact of these corrections on basic observables measured in the single-top production process was also studied.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Article Physics, Particles & Fields

Duals of Feynman integrals. Part I. Differential equations

Simon Caron-Huot et al.

Summary: This paper explores the concept of dual forms related to Feynman integrals and examines their mathematical applications. These dual forms simplify calculations and provide a systematic approach to reconstructing amplitudes and deriving differential equations for one-loop integrals in non-integer spacetime dimensions.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Article Physics, Particles & Fields

Cuts for two-body decays at colliders

Gavin P. Salam et al.

Summary: Fixed-order perturbative calculations for two-body decay processes at colliders exhibit sensitivity to unphysically low momentum scales and poor convergence, especially in the case of H -> γγ in gluon fusion. By making simple modifications to fiducial cuts, such as replacing linear dependence with quadratic dependence, significant improvements in perturbative expansion behavior can be achieved. More sophisticated cuts can even achieve Higgs p(t)-independent acceptance at low p(t) with various advantages.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Article Physics, Particles & Fields

Three-loop helicity amplitudes for four-quark scattering in massless QCD

Fabrizio Caola et al.

Summary: This study calculates the three-loop corrections to the helicity amplitudes for q (q) over bar -> Q (Q) over bar scattering in massless QCD, reducing them to master integrals and expressing them in terms of harmonic polylogarithms. The renormalised amplitudes exhibit infrared divergences of dipole and quadrupole type, with finite remainders derived. Explicit results for all relevant partonic channels, including both equal and different quark flavours, are presented.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Correction Physics, Particles & Fields

The automation of next-to-leading order electroweak calculations (vol 07, 185, 2018)

R. Frederix et al.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Article Physics, Particles & Fields

A factorisation-aware Matrix element emulator

D. Maitre et al.

Summary: This article introduces a neural network based model for emulating matrix elements, which improves on existing methods by utilizing known factorisation properties. The results show that the model can accurately replicate matrix elements within the phase-space covered during training, and robustly extrapolate to more singular regions in the phase-space.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Article Physics, Particles & Fields

Two-loop leading-colour QCD helicity amplitudes for Higgs boson production in association with a bottom-quark pair at the LHC

Simon Badger et al.

Summary: The researchers computed the two-loop QCD helicity amplitudes for the production of a Higgs boson in association with a bottom quark pair at a hadron collider. They used the approximations of leading color and worked in the five flavor scheme, where the bottom quarks are massless while the Yukawa coupling is non-zero. Analytic expressions were obtained from multiple numerical evaluations over finite fields and presented in terms of an independent set of special functions for reliable evaluation over the full phase space.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Article Physics, Particles & Fields

On improving NLO merging for t(t)over-barW production

Rikkert Frederix et al.

Summary: An improved FxFx matrix element merging procedure is introduced for pp -> t((t) over bar )W production, providing the most accurate predictions to date with inclusive cross sections and differential distributions. The study includes NLO EW corrections and on-shell LO decays of t((t) over bar )W with tree-level spin correlations, resulting in significant enhancements over NLO QCD predictions in the differential distributions.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Article Physics, Particles & Fields

Parton distributions from LHC, HERA, Tevatron and fixed target data: MSHT20 PDFs

S. Bailey et al.

Summary: The new MSHT20 set of parton distribution functions (PDFs) of the proton, determined from global analyses of hard scattering data, includes updates such as improved parameterizations, new precise data, and NNLO QCD corrections. The NNLO fit is strongly favored over the NLO due to wider range and increased precision of data included in the fit, resulting in reduced uncertainties in predictions for processes such as Higgs, top quark pair, and W, Z production at post LHC Run-II energies.

EUROPEAN PHYSICAL JOURNAL C (2021)

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Combined NLO EW and QCD corrections to off-shell ttW production at the LHC

Ansgar Denner et al.

Summary: This study combines NLO QCD and electroweak corrections for the first time to calculate the full off-shell t (t) over barW+ production at the LHC in the three-charged-lepton channel, including all spin correlations, non-resonant effects, and interferences.

EUROPEAN PHYSICAL JOURNAL C (2021)

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Article Physics, Particles & Fields

Measurement of the Higgs boson production rate in association with top quarks in final states with electrons, muons, and hadronically decaying tau leptons at √s=13TeV

A. M. Sirunyan et al.

Summary: The study measured the production rates of Higgs bosons associated with top quarks, using data recorded by the CMS experiment. It showed significant deviations from the standard model expectations and constrained the coupling of the Higgs boson to the top quark, making it the most sensitive measurement of ttH production rate to date.

EUROPEAN PHYSICAL JOURNAL C (2021)

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A prescription for projectors to compute helicity amplitudes in D dimensions

Long Chen

Summary: The article discusses a prescription for computing polarized dimensionally regularized amplitudes by providing a recipe for constructing simple and general polarized amplitude projectors in D dimensions. This prescription offers technical advantages and can be used in a hybrid way with the conventional dimensional regularization scheme.

EUROPEAN PHYSICAL JOURNAL C (2021)

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Article Physics, Multidisciplinary

Diphoton Amplitudes in Three-Loop Quantum Chromodynamics

Fabrizio Caola et al.

Summary: In this study, we calculate the three-loop scattering amplitudes for the production of a pair of photons in quark-antiquark annihilation in QCD, using suitably defined projectors to efficiently calculate all helicity amplitudes. The relatively compact analytic results are expressed in terms of harmonic polylogarithms or multiple polylogarithms of up to depth three. This is the first calculation of a three-loop four-point scattering amplitude in full QCD.

PHYSICAL REVIEW LETTERS (2021)

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Review Physics, Multidisciplinary

Collider physics at the precision frontier

Gudrun Heinrich

Summary: The review provides an overview of recent developments in precision calculations within the Standard Model of particle physics, particularly in the Higgs sector. It focuses on phenomenological results in the first part and reviews techniques that have contributed to rapid progress in the field of precision calculations in the second part.

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS (2021)

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Precise predictions for photon pair production matched to parton showers in GENEVA

Simone Alioli et al.

Summary: In this study, a new calculation method for the production of isolated photon pairs at the LHC with NNLLT0' +NNLO accuracy is presented. By implementing a process with a nontrivial Born-level definition suffering from QED singularities within the Geneva Monte Carlo framework, the researchers successfully used a smooth-cone isolation algorithm to remove divergences. The higher-order resummation of the 0-jettiness resolution variable T0, based on a factorization formula derived within Soft-Collinear Effective Theory, predicted all of the singular, virtual, and real NNLO corrections.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Drell-Yan qT resummation of fiducial power corrections at N3LL

Markus A. Ebert et al.

Summary: The study shows that linear power corrections are dominant for the fiducial q(T) spectrum and can be predicted and accumulated to the same order as the leading power contribution through factorization. The complete tensor decomposition method provides a rigorous theoretical basis for recoil schemes and accurate angular decomposition for complex cases such as Z/gamma (*) -> ll or W -> l nu.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Local Unitarity: a representation of differential cross-sections that is locally free of infrared singularities at any order

Zeno Capatti et al.

Summary: The proposed representation of differential scattering cross-sections can locally cancel infrared singularities, applies to processes without initial-state collinear singularities, and regulates divergences for loop momenta with large magnitudes using local ultraviolet counterterms. It is well-suited for numerical implementation and has demonstrated practical potential by computing accurate differential cross-sections without IR counterterms for specific processes, as well as showing results beyond next-to-leading order for a scalar scattering process.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Article Physics, Particles & Fields

Loop-tree duality from vertices and edges

William J. Torres Bobadilla

Summary: The causal representation of multi-loop scattering amplitudes obtained from the loop-tree duality formalism provides a comprehensive understanding of the behavior of physical singularities at the integrand level. The study reveals compact expressions for multi-loop topologies with the same number of vertices and shows a correspondence between vertices and the collection of internal lines. By considering the structure of causal propagators, the paper presents explicit causal representations of loop topologies with up to nine vertices.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Two-loop leading colour QCD corrections to q(q)over-bar → γγg and qg → γγq

Bakul Agarwal et al.

Summary: The study presents the leading colour and light fermionic planar two-loop corrections for the production of two photons and a jet in the quark-antiquark and quark-gluon channels. The results were implemented in an efficient C++ numerical code, and analytic expressions were provided in Mathematica format.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Resurrecting b(b)over-barh with kinematic shapes

Christophe Grojean et al.

Summary: Analysis of kinematic shapes can help separate production modes sensitive to the bottom-quark Yukawa coupling from background processes, providing insights into the size and possibly the phase of y(b). By making machine learning algorithms interpretable, we can selectively focus on the most important kinematic variables in the analysis.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Article Physics, Particles & Fields

Bottom-induced contributions to Higgs plus jet at next-to-next-to-leading order

Roberto Mondini et al.

Summary: This study presents a NNLO QCD calculation for the production of a Higgs boson plus a jet induced by bottom quarks. The methodology uses Njettiness slicing to regulate infrared divergences and has been validated extensively, with results shown for the 13TeV LHC. The NNLO predictions show improved renormalization and factorization scale dependence, particularly crucial for 5FS calculations at lower orders.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Virtual corrections to gg → ZH via a transverse momentum expansion

Lina Alasfar et al.

Summary: We have computed the next-to-leading virtual QCD corrections to the partonic cross section for the production of a Higgs boson in association with a Z boson in gluon fusion using a method based on expansion in terms of small transverse momentum. The method has been generalized to consider different masses in the final state and asymmetry in the forward-backward direction exchange. Our analytical approach provides a very good approximation of the partonic cross section up to around 750 GeV in the center of mass energy region, where the majority of the total hadronic cross section at the LHC is concentrated.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Article Computer Science, Interdisciplinary Applications

Integral reduction with Kira 2.0 and finite field methods

Jonas Klappert et al.

Summary: The new version 2.0 of the Feynman integral reduction program Kira introduces new features such as reconstructing final coefficients, supporting user-provided systems of equations, and parallelization on computer clusters. Benchmark tests show significantly reduced main memory usage and improved performance compared to previous versions of Kira.

COMPUTER PHYSICS COMMUNICATIONS (2021)

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NLO QCD corrections to off-shell t(t)over-barW± production at the LHC: correlations and asymmetries

Giuseppe Bevilacqua et al.

Summary: Recent discrepancies between theoretical predictions and experimental data in multi-lepton plus b-jets analyses for the t (t) over barW(+/-) process have indicated the need for more accurate theoretical predictions and high precision observables to constrain numerous new physics scenarios. By employing NLO QCD computations with full off-shell top quark effects included, theoretical predictions for the R=sigma(t (t) over barW)+/sigma(-)(t (t) over barW) cross section ratio are provided at the LHC with root s=13 TeV, obtaining 2-3% theoretical precision on R depending on the transverse momentum cut on the b-jet.

EUROPEAN PHYSICAL JOURNAL C (2021)

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t(t)over-barH production at NNLO: the flavour off-diagonal channels

Stefano Catani et al.

Summary: In this study, we investigate the QCD radiative corrections for the associated production of a heavy-quark pair with a generic colorless system at hadron colliders. The resummation formalism for the production of the heavy-quark pair system at small values of its total transverse momentum is discussed, and the results of the corresponding resummation coefficients at next-to-leading and next-to-next-to-leading order are presented. The perturbative expansion of the resummation formula provides explicit ingredients for applying the q(T) subtraction formalism to fixed-order calculations, and a fully differential perturbative computation is performed for top-antitop quark pair and Higgs boson production, showing agreement with established subtraction methods. Also, results for the flavor off-diagonal partonic channels at the next-to-next-to-leading order are presented for the first time.

EUROPEAN PHYSICAL JOURNAL C (2021)

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Article Physics, Particles & Fields

Four-lepton production in gluon fusion at NLO matched to parton showers

Simone Alioli et al.

Summary: This article presents a calculation of NLO QCD corrections to gluon-induced electroweak gauge boson pair production, gg -> ZZ and gg -> W+W-, matched to PYTHIA 8 parton shower in the POWHEG approach. The calculation incorporates continuum background, Higgs-mediated processes, and their interference, allowing for realistic experimental effects in precision analyses of diboson production and the Higgs boson in the offshell regime.

EUROPEAN PHYSICAL JOURNAL C (2021)

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Probing the spin correlations of t(t)over-bar production at NLO QCD plus EW

Rikkert Frederix et al.

Summary: This study investigates the NLO QCD+EW corrections to top quark pair production and their impact on spin correlation coefficients, leptonic asymmetries, and differential distributions. The results show that the EW corrections are within the NLO QCD theoretical uncertainties for spin correlation coefficients and leptonic asymmetries, while they exceed the NLO QCD scale uncertainty in high rapidity regimes for differential distributions.

EUROPEAN PHYSICAL JOURNAL C (2021)

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Precision studies for Drell-Yan processes at NNLO

S. Alekhin et al.

Summary: A detailed comparison was made for four publicly available computer codes computing fixed-order predictions for Drell-Yan processes at the LHC and Tevatron colliders. It was found that while there is agreement among the predictions at NLO accuracy, differences arise at NNLO, potentially due to neglected power corrections in the codes using global slicing methods for double real emissions regularization.

EUROPEAN PHYSICAL JOURNAL C (2021)

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Article Physics, Particles & Fields

Lotty - The loop-tree duality automation

William J. Torres Bobadilla

Summary: The novel formulation of the loop-tree duality is elaborated on through the introduction of the Mathematica package Lotty, which automates the process at multi-loop level. By studying the features of Lotty and recalling former studies, the representation of multi-loop amplitudes in a causal form at integrand level is discussed. Additionally, the role of Lotty in automating the dual representation of integrands is elucidated by recalling results obtained up to four loops and providing support to the all-loop causal representation conjecture. The numerical stability of integrands generated by Lotty is further studied in two-loop planar and non-planar topologies through numerical integration and comparison with known results.

EUROPEAN PHYSICAL JOURNAL C (2021)

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Article Physics, Nuclear

Vector-Boson scattering at the LHC: Unraveling the electroweak sector

Roberto Covarelli et al.

Summary: This review focuses on the salient aspects of Vector-boson scattering (VBS) processes, discussing theoretical advancements, experimental techniques, relevant measurements, and comparisons with Standard Model predictions. The future prospects at upcoming Large Hadron Collider runs and future hadron facilities are also considered in the discussion.

INTERNATIONAL JOURNAL OF MODERN PHYSICS A (2021)

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Article Physics, Mathematical

On the computation of intersection numbers for twisted cocycles

Stefan Weinzierl

Summary: Intersection numbers of twisted cocycles play a significant role in algebraic geometry and have recently found applications in physics. Existing algorithms for computing these intersection numbers often involve algebraic extensions, but this article presents an improved algorithm that avoids the need for such extensions.

JOURNAL OF MATHEMATICAL PHYSICS (2021)

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Article Physics, Multidisciplinary

Next-to-Next-to-Leading Order Event Generation for Top-Quark Pair Production

Javier Mazzitelli et al.

Summary: Studying the production of top-quark pairs in hadronic collisions is crucial for understanding the properties of the heaviest quark observed in nature, with Monte Carlo simulations being heavily relied upon and challenged by experimental measurements. This work presents the first matched computation of top-quark pair production at next-to-next-to-leading order in QCD with all-order radiative corrections using parton-shower simulations, marking an important step towards simulating other hadronic processes with color charges in the final state.

PHYSICAL REVIEW LETTERS (2021)

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Article Physics, Multidisciplinary

Two-Loop QCD Corrections to Wb(b)over-bar Production at Hadron Colliders

Simon Badger et al.

Summary: An analytic computation of two-loop QCD corrections to u (d) over bar -> W(+)b (b) over bar for an on-shell W boson was presented using leading color and massless bottom quark approximations. Integration-by-parts reduction of the unpolarized squared matrix element was achieved through finite field reconstruction techniques, leading to the identification of an independent basis of special functions allowing for analytic subtraction of infrared and ultraviolet poles. This basis is applicable to all planar topologies for five-particle scattering with an off-shell leg.

PHYSICAL REVIEW LETTERS (2021)

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Article Physics, Multidisciplinary

Higgs pT Spectrum and Total Cross Section with Fiducial Cuts at Third Resummed and Fixed Order in QCD

Georgios Billis et al.

Summary: This study presents predictions for the gluon-fusion Higgs p(T) spectrum at the Large Hadron Collider, including improved third-order predictions and resummation. The (NLO)-L-3 correction is enhanced by cut-induced logarithmic effects, making it the highest-order prediction achieved so far at a hadron collider.

PHYSICAL REVIEW LETTERS (2021)

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Article Physics, Multidisciplinary

Fully Differential Higgs Boson Production to Third Order in QCD

X. Chen et al.

Summary: This study presents the first fully differential predictions for the production cross section of a Higgs boson via the gluon fusion mechanism at next-to-next-to-next-to-leading order ((NLO)-L-3) in QCD perturbation theory. The (NLO)-L-3 corrections exhibit complex features and significantly reduce perturbative uncertainties for the production cross section.

PHYSICAL REVIEW LETTERS (2021)

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Article Astronomy & Astrophysics

Four lepton production in gluon fusion: Off-shell Higgs effects in NLO QCD

Massimiliano Grazzini et al.

Summary: This article focuses on the production of four charged leptons in hadron collisions and computes the next-to-leading order QCD corrections to the loop-induced gluon fusion contribution while considering the Higgs boson signal, background, and interference. The calculations are implemented in the MATRIX framework and show good agreement with recent ATLAS data, providing valuable insights into constraining the Higgs boson width through off-shell measurements.

PHYSICS LETTERS B (2021)

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Article Astronomy & Astrophysics

Four-loop collinear anomalous dimensions in QCD and N=4 super Yang-Mills

Bakul Agarwal et al.

Summary: The collinear anomalous dimensions in massless four-loop QCD and N = 4 supersymmetric Yang-Mills theory are calculated by analyzing the infrared poles of vertex form factors. Precise numerical approximations and a conjecture for the complete analytic results in both models are provided in this study.

PHYSICS LETTERS B (2021)

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Article Astronomy & Astrophysics

Precise predictions for WH plus jet production at the LHC

R. Gauld et al.

Summary: This study presents precise predictions for the production of a Higgs boson in association with a hadronic jet and a W boson at hadron colliders. The behavior of QCD corrections is investigated for fiducial cross sections and distributions of relevant observables. The inclusion of QCD corrections leads to a stabilization of the predictions and a reduction of theoretical uncertainties.

PHYSICS LETTERS B (2021)

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Article Astronomy & Astrophysics

Next-to-next-to-leading order event generation for Z-boson pair production matched to parton shower

Simone Alioli et al.

Summary: A novel NNLO QCD calculation method matched to parton shower was proposed for the production of Z bosons decaying into four massless leptons at the LHC. The results show a good agreement with data from the ATLAS and CMS experiments, indicating the effectiveness of the method.

PHYSICS LETTERS B (2021)

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Review Physics, Multidisciplinary

Vector bosons and jets in proton collisions

Paolo Azzurri et al.

Summary: Events with vector bosons produced in association with jets have been extensively studied at hadron colliders, providing high-accuracy tests of the standard model. Understanding these processes is crucial for precision Higgs physics and the search for new physics. The associated production of gamma, W, or Z bosons with light-flavor and heavy-flavor jets is a powerful tool for testing perturbative QCD calculations and Monte Carlo event generators.

REVIEWS OF MODERN PHYSICS (2021)

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Article Physics, Particles & Fields

ttbb at the LHC: on the size of corrections and b-jet definitions

Giuseppe Bevilacqua et al.

Summary: This study presents the calculation of next-to-leading order QCD corrections to the production of a tt pair in association with two heavy-flavour jets at the LHC. The results are analyzed extensively to investigate theoretical uncertainties and potential impacts of bottom-quark parton density contributions. The findings have important implications for measurements related to ttH(H -> bb) and the Higgs coupling to the top quark, as well as for precise measurements and modeling of top-quark decay at the LHC.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Article Physics, Particles & Fields

Two-loop leading colour QCD helicity amplitudes for top quark pair production in the gluon fusion channel

Simon Badger et al.

Summary: The paper presents a complete set of analytic helicity amplitudes for top quark pair production via gluon fusion at two-loops in QCD, including corrections due to massive fermion loops and the missing master integrals needed to compute the amplitude. The results are obtained in terms of iterated integrals using rationalised kinematics and finite field sampling, with a study on the numerical evaluation of the iterated integrals.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Article Physics, Particles & Fields

Two-loop leading-color helicity amplitudes for three-photon production at the LHC

Herschel A. Chawdhry et al.

Summary: The study calculates all planar contributions to the two-loop massless helicity amplitudes for the q (q) over bar -> gamma gamma gamma process and presented the results in analytic form using the functional basis proposed by Chicherin and Sotnikov. The research combines various modern computational techniques and agrees with a recent calculation of the same amplitude performed using different techniques, suggesting that the framework is suitable for calculating two-loop multi-leg amplitudes.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Article Physics, Particles & Fields

On the interference of ggH and c(c)over-barH Higgs production mechanisms and the determination of charm Yukawa coupling at the LHC

Wojciech Bizon et al.

Summary: This study discusses QCD corrections to the interference contribution in Higgs boson production associated with charm-quark jets, showing that the expected impact of logarithmic terms on the magnitude of QCD corrections may be moderate due to cancellations between different logarithmic terms.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Article Physics, Particles & Fields

Dual subtractions

Renato Maria Prisco et al.

Summary: A novel local subtraction scheme is proposed for the computation of Next-to-Leading Order contributions to theoretical predictions in perturbative Quantum Field Theory for scattering processes. Unlike previous schemes based on the analysis of real radiation matrix elements, this construction starts from loop diagrams and utilizes their dual representation. The scheme implements exact phase space factorization, handles final state and initial state singularities, and is suitable for both massless and massive particles.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Article Physics, Particles & Fields

Advancing MNNLOPS to diboson processes: Zγ production at NNLO plus PS

Daniele Lombardi et al.

Summary: In this study, Z gamma production in hadronic collisions was considered with the first computation of NNLO+PS accurate predictions. Both NNLO corrections and matching to parton showers are crucial for an accurate simulation of the Z gamma process. The predictions are in very good agreement with recent ATLAS data.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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NNLO QCD predictions for W plus c-jet production at the LHC

Michal Czakon et al.

Summary: This study focuses on the production of a W boson in association with a c-jet at the LHC, calculating the complete set of NNLO QCD corrections for the dominant CKM-diagonal contribution to this process for the first time. Predictions are made for fiducial cross sections and differential distributions for both signatures, which are compared with ATLAS measurements at 7 TeV. The results are important for precise description of heavy flavor production at hadron colliders and determination of the strange-quark content of the proton from LHC data in NNLO QCD.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Article Physics, Particles & Fields

Higgs-boson production in top-quark fragmentation

Colomba Brancaccio et al.

Summary: We have computed the fragmentation functions for the production of a Higgs boson at O(y(t)(2)alpha(s)), deriving the relevant splitting functions at the same perturbative order. Our results can be employed to calculate differential cross sections with arbitrary top-quark and Higgs-boson masses, and to resum logarithms of the form ln(p(T)/m) to next-to-leading-logarithmic accuracy by solving the DGLAP equations at large transverse momentum p(T).

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Article Physics, Particles & Fields

The pp → W(→ lν) + γ process at next-to-next-to-leading order

John M. Campbell et al.

Summary: The study presents the calculation of the pp -> W(-> lnugamma) process at NNLO in QCD using the jettiness slicing method, based on analytic amplitudes. It discusses the importance of NLO QCD contributions, disruption in the counting of contributions, assessment of electroweak corrections, and future competitiveness of experimental and theoretical predictions.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Article Physics, Particles & Fields

Leading-color two-loop QCD corrections for three-jet production at hadron colliders

S. Abreu et al.

Summary: This study presents a complete set of leading-color two-loop contributions for obtaining next-to-next-to-leading-order (NNLO) QCD corrections to three-jet production at hadron colliders. Analytic expressions for a generating set of finite remainders valid in the physical region for three-jet production were obtained. The analytic continuation of known Euclidean-region results was determined from a small set of numerical evaluations of the amplitudes, suitable for phenomenological applications.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Article Physics, Particles & Fields

NNLO QCD study of polarised W+W- production at the LHC

Rene Poncelet et al.

Summary: The longitudinal polarization of weak bosons, a direct consequence of Electroweak symmetry breaking mechanism, was studied at NNLO in diboson production with a fiducial setup inspired by ATLAS measurements. The study, utilizing the double-pole approximation framework, investigates NNLO effects in differential distributions for the first time.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Article Physics, Particles & Fields

Leading singularities in Baikov representation and Feynman integrals with uniform transcendental weight

Christoph Dlapa et al.

Summary: The study introduces a leading singularity analysis protocol in Baikov representation for searching Feynman integrals with uniform transcendental weight, particularly suitable for UT integrals with multiple mass scales. The power of this approach is demonstrated by determining the UT basis for a two-loop diagram with three external mass scales.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Article Physics, Particles & Fields

On factorisation schemes for the electron parton distribution functions in QED

S. Frixione

Summary: The electron, positron, and photon Parton Distribution Functions (PDFs) of the unpolarised electron have been computed at the next-to-leading logarithmic accuracy in QED using the (MS) over bar factorisation scheme. The behavior of PDFs in the large-z region dramatically depends on whether running-alpha effects are included to all orders or truncated to some fixed order. Suitable initial and evolution conditions yield next-to-leading logarithmic accurate PDFs with identical large-z functional forms to their leading logarithmic counterparts.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Article Physics, Particles & Fields

Optimising simulations for diphoton production at hadron colliders using amplitude neural networks

Joseph Aylett-Bullock et al.

Summary: Utilizing neural networks to approximate matrix elements for high-multiplicity scattering processes, with a focus on loop-induced diphoton production. Studying the performance of trained networks in different kinematic cuts and reliability aspects of the simulations.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Article Physics, Particles & Fields

Pentagon integrals to arbitrary order in the dimensional regulator

Nikolaos Syrrakos

Summary: We analytically calculated one-loop five-point Master Integrals, pentagon integrals, with one off-shell leg to arbitrary order in dimensional regulator. The study constructed a pure basis of Master Integrals for the pentagon family with one off-shell leg and provided relevant boundary terms in closed form. The solutions of the canonical differential equation were obtained in terms of Goncharov Polylogartihms of arbitrary transcendental weight.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Article Physics, Particles & Fields

Fiducial Higgs and Drell-Yan distributions at N3LL′+NNLO with RadISH

Emanuele Re et al.

Summary: This study presents state-of-the-art predictions for transverse observables relevant to colour-singlet production at the LHC, utilizing a NLL-L-3 resummation according to the RADISH formalism and matching the results with fixed-order differential spectra at NNLO accuracy. The inclusion of O(α(3)(s)) constant terms and transverse-recoil effects proves beneficial for comparing theoretical predictions to data, leaving a residual theoretical uncertainty in the resummation region at the 2-5% level for Drell-Yan observables, and 5-7% in Higgs production.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Article Multidisciplinary Sciences

A Stroll through the Loop-Tree Duality

Jose de Jesus Aguilera-Verdugo et al.

Summary: This article reviews the latest developments regarding the Loop-Tree Duality (LTD) theorem, focusing on the manifestly causal representation of multi-loop Feynman integrals and scattering amplitudes, as well as the definition of dual local counter-terms to cancel infrared singularities.

SYMMETRY-BASEL (2021)

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Article Physics, Particles & Fields

Mixed EW-QCD two-loop amplitudes for qq→l+l- and γ5 scheme independence of multi-loop corrections

Matthias Heller et al.

Summary: The study focuses on the qq-initiated two-loop electroweak-QCD Drell-Yan scattering amplitude with vanishing light quark and lepton masses using dimensional regularization schemes. It is found that the infrared pole terms of the mixed two-loop amplitude are controlled by a known generalization of the dipole formula, and that exactly the same two-loop polarized hard scattering functions are obtained in both the standard 't Hooft-Veltman-Breitenlohner-Maison gamma(5) scheme and Kreimer's anticommuting gamma(5) scheme.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Article Astronomy & Astrophysics

Drell-Yan lepton-pair production: qT resummation at N3LL accuracy and fiducial cross sections at N3LO

Stefano Camarda et al.

Summary: The study presents high-accuracy QCD predictions for Drell-Yan lepton pairs produced in hadronic collisions, including transverse-momentum distribution and fiducial cross sections. By summing up logarithmically enhanced contributions to all perturbative orders and combining with fixed-order predictions, perturbative uncertainty is reduced.

PHYSICAL REVIEW D (2021)

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Photon and leptons induced processes at the LHC

Luca Buonocore et al.

Summary: This study examines several basic photon and lepton-initiated processes at the LHC, utilizing recently developed photon and lepton parton densities for computation. The comparison of different calculation methods and their application in searching for exotic particles and observing Standard-Model processes are discussed.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Review Astronomy & Astrophysics

Matching NNLO predictions to parton showers using N3LL color-singlet transverse momentum resummation in GENEVA

Simone Alioli et al.

Summary: Researchers extended the GENEVA Monte Carlo framework using the transverse momentum of a color-singlet system as the resolution variable, allowing for precise predictions through N3LL resummation. They presented satisfactory results for Drell-Yan lepton-pair production and assessed the impact of two different resolution variables on differential observables.

PHYSICAL REVIEW D (2021)

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Article Astronomy & Astrophysics

Fermionic corrections to quark and gluon form factors in four-loop QCD

Roman N. Lee et al.

Summary: This study analytically computed all four-loop QCD corrections to the photon-quark and Higgs-gluon form factors involving a closed massless fermion loop. It also confirmed a previous conjecture for the analytical form of the nonfermionic contributions to the collinear anomalous dimensions of quarks and gluons through the calculation of nonplanar vertex integrals.

PHYSICAL REVIEW D (2021)

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Article Astronomy & Astrophysics

Full NLO QCD corrections to off-shell t(t)over-barb(b)over-bar production

Ansgar Denner et al.

Summary: This article presents the computation of next-to-leading-order (NLO) QCD corrections for a specific physics process at the LHC, marking the first public release of a full NLO computation for a 2 -> 8 process with 6 external strongly interacting partons. By comparing results with and without a double-pole approximation for the top quarks, it is found that the difference between the full calculation and the approximation is generally below 5%, but can reach up to 10% in certain phase space regions.

PHYSICAL REVIEW D (2021)

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Article Physics, Particles & Fields

Automated EW corrections with isolated photons: t(t)over-barγ, t(t)over-barγγ and tγj as case studies

Davide Pagani et al.

Summary: In this study, the so-called Complete-NLO predictions for top-quark pair hadroproduction in association with at least one isolated photon are computed for the first time. NLO QCD+EW predictions are also calculated for cases with at least two isolated photons and single-top hadroproduction with at least one isolated photon. The results, obtained through an automated approach, extend the capabilities of the MADGRAPH5_AMC@NLO framework and discuss technical details, including a mixed EW renormalisation scheme for such processes.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Article Physics, Particles & Fields

Anomalous couplings in Higgs-boson pair production at approximate NNLO QCD

Daniel de Florian et al.

Summary: This study combines NLO predictions with full top-quark mass dependence with approximate NNLO predictions for Higgs-boson pair production in gluon fusion. It examines the impact of anomalous couplings on various observables and provides numerical coefficients for the approximate NNLO cross section as a function of the anomalous couplings at root s = 14TeV.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Article Astronomy & Astrophysics

Geometrical approach to causality in multiloop amplitudes

German F. R. Sborlini

Summary: An innovative geometric approach based on graph theory is described in the article to unveil the causal structure of any multi-loop multi-leg amplitude in quantum field theory, determined by the vertex matrix and connected partitions of the underlying diagrams. Causal representations for a given topological family are obtained by summing over subsets of all the possible causal entangled thresholds originating connected and oriented partitions of the underlying topology.

PHYSICAL REVIEW D (2021)

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Article Astronomy & Astrophysics

Mixed QCD-electroweak corrections to pp → lνl + X at the LHC

Luca Buonocore et al.

Summary: In this study, the mixed QCD-electroweak corrections to hadroproduction of a massive charged lepton and the corresponding neutrino through the Drell-Yan mechanism are computed for the first time. The cancellation of soft and collinear singularities is achieved, and real and virtual contributions are consistently included without approximation. The calculated corrections show qualitative agreement with a factorized approach and exhibit negative trends at large lepton transverse momenta, reaching about -20% at p(T) = 500 GeV compared to the next-to-leading-order QCD result.

PHYSICAL REVIEW D (2021)

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Article Astronomy & Astrophysics

Top-quark pair production in association with a W ± gauge boson in the POWHEG-BOX

F. Febres Cordero et al.

Summary: A new Monte Carlo event generator was presented for the production of a top-quark pair in association with a W-+/- boson at hadron colliders. The researchers performed comparisons of different event generators at the Large Hadron Collider, finding that the subleading contribution at O(alpha(s)alpha(3)) is particularly sensitive to differences in matching schemes.

PHYSICAL REVIEW D (2021)

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Article Astronomy & Astrophysics

Next-to-leading order corrections to light-quark mixed QCD-EW contributions to Higgs boson production

Matteo Becchetti et al.

Summary: This study presents the exact next-to-leading-order QCD corrections to the light-quark part of the mixed QCD-EW contributions to Higgs production via gluon fusion at the Large Hadron Collider for a center-of-mass energy of 13 TeV. The choice of renormalization and factorization scales has a significant impact on the final result.

PHYSICAL REVIEW D (2021)

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Article Astronomy & Astrophysics

Tensor decomposition for bosonic and fermionic scattering amplitudes

Tiziano Peraro et al.

Summary: The paper elaborates on a method for decomposing multiloop multileg scattering amplitudes into Lorentz-invariant form factors, applicable to both fermionic and bosonic amplitudes. This approach identifies a minimal number of physically relevant form factors and can relate them one to one to independent helicity amplitudes. The method is explicitly discussed in the context of various four- and five-point scattering amplitudes relevant for LHC physics.

PHYSICAL REVIEW D (2021)

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Article Astronomy & Astrophysics

gg → HH: Combined uncertainties

J. Baglio et al.

Summary: This paper discusses the combination of usual renormalization and factorization scale uncertainties in Higgs-pair production via gluon fusion with the novel uncertainties from scheme and scale choices of the virtual top mass. The uncertainties related to the top-mass definition for different values of the trilinear Higgs coupling are also addressed, along with their combination with other uncertainties.

PHYSICAL REVIEW D (2021)

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Article Astronomy & Astrophysics

Mixed QCD-electroweak corrections to W-boson production in hadron collisions

Arnd Behring et al.

Summary: Mixed QCD-electroweak corrections to fully differential production of an on-shell W boson, including decays of W bosons to lepton pairs in the leading order approximation, are computed analytically for arbitrary electroweak gauge boson masses. Analytic results for integrated subtraction terms are obtained within a soft-collinear subtraction scheme tailored to handle the structural simplicity of infrared singularities of mixed QCD-electroweak contributions, with numerical results presented for mixed corrections to the fiducial cross section of pp -> W+ -> l(+)nu and selected kinematic distributions in this process.

PHYSICAL REVIEW D (2021)

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Correction Physics, Particles & Fields

Light quark mediated Higgs boson threshold production in the next-to-leading logarithmic approximation (vol 07, 195, 2020)

Charalampos Anastasiou et al.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Article Physics, Particles & Fields

Analytic representation of all planar two-loop five-point Master Integrals with one off-shell leg

Dhimiter D. Canko et al.

Summary: Analytic expressions for three families of planar two-loop five-point Master Integrals with one off-shell leg are presented in terms of polylogarithmic functions, using the Simplified Differential Equations approach. The results are relevant for studying various 2 -> 3 scattering processes at the LHC, particularly for leading-color W + 2 jets production.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Article Astronomy & Astrophysics

New CTEQ global analysis of quantum chromodynamics with high-precision data from the LHC

Tie-Jiun Hou et al.

Summary: The new parton distribution functions (PDFs) from the CTEQ-TEA collaboration are determined using a wide variety of high-precision Large Hadron Collider (LHC) data, in addition to other datasets. These PDFs are analyzed at next-to-leading order and next-to-next-to-leading order, with error sets determined using the Hessian method. The data sensitivity and preference towards quantities such as α(s)(m(Z)), and the gluon and strange quark distributions are quantified using fast PDF survey techniques.

PHYSICAL REVIEW D (2021)

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Article Computer Science, Interdisciplinary Applications

FIRE6: Feynman Integral REduction with modular arithmetic

A. Smirnov et al.

COMPUTER PHYSICS COMMUNICATIONS (2020)

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Article Computer Science, Interdisciplinary Applications

Reconstructing rational functions with FireFly

Jonas Klappert et al.

COMPUTER PHYSICS COMMUNICATIONS (2020)

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Article Physics, Particles & Fields

Jet cross sections at the LHC and the quest for higher precision

Johannes Bellm et al.

EUROPEAN PHYSICAL JOURNAL C (2020)

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Analytic results for deep-inelastic scattering at NNLO QCD with the nested soft-collinear subtraction scheme

Konstantin Asteriadis et al.

EUROPEAN PHYSICAL JOURNAL C (2020)

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Search for production of four top quarks in final states with svame-sign or multiple leptons in proton-proton collisions at √s=13 TeV

A. M. Sirunyan et al.

EUROPEAN PHYSICAL JOURNAL C (2020)

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Article Computer Science, Interdisciplinary Applications

NLOX, a one-loop provider for Standard Model processes

Steve Honeywell et al.

COMPUTER PHYSICS COMMUNICATIONS (2020)

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Article Physics, Particles & Fields

Integration-by-parts reductions of Feynman integrals using Singular and GPI-Space

Dominik Bendle et al.

JOURNAL OF HIGH ENERGY PHYSICS (2020)

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Article Physics, Particles & Fields

Mixed QCD⊗QED corrections to on-shell Z boson production at the LHC

Maximilian Delto et al.

JOURNAL OF HIGH ENERGY PHYSICS (2020)

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Article Physics, Particles & Fields

Polarised amplitudes and soft-virtual cross sections for b(b)over-bar → ZH at NNLO in QCD

Taushif Ahmed et al.

JOURNAL OF HIGH ENERGY PHYSICS (2020)

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Generalised power series expansions for the elliptic planar families of Higgs plus jet production at two loops

F. Moriello

JOURNAL OF HIGH ENERGY PHYSICS (2020)

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Evaluating a family of two-loop non-planar master integrals for Higgs plus jet production with full heavy-quark mass dependence

R. Bonciani et al.

JOURNAL OF HIGH ENERGY PHYSICS (2020)

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From infinity to four dimensions: higher residue pairings and Feynman integrals

Sebastian Mizera et al.

JOURNAL OF HIGH ENERGY PHYSICS (2020)

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Next-to-leading-order QCD and electroweak corrections to triple-W production with leptonic decays at the LHC

Stefan Dittmaier et al.

JOURNAL OF HIGH ENERGY PHYSICS (2020)

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NNLO QCD corrections to three-photon production at the LHC

Herschel A. Chawdhry et al.

JOURNAL OF HIGH ENERGY PHYSICS (2020)

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NNLO QCD plus NLO EW with MATRIX plus OPENLOOPS: precise predictions for vector-boson pair production

M. Grazzini et al.

JOURNAL OF HIGH ENERGY PHYSICS (2020)

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From positive geometries to a coaction on hypergeometric functions

Samuel Abreu et al.

JOURNAL OF HIGH ENERGY PHYSICS (2020)

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Associated top quark pair production with a heavy boson: differential cross sections at NLO plus NNLL accuracy

Anna Kulesza et al.

EUROPEAN PHYSICAL JOURNAL C (2020)

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Article Physics, Nuclear

WWγ production at hadron colliders with NLO QCD plus EW corrections and parton shower effects

Zhu Jian-Wen et al.

JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS (2020)

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The full four-loop cusp anomalous dimension in N=4 super Yang-Mills and QCD

Johannes M. Henn et al.

JOURNAL OF HIGH ENERGY PHYSICS (2020)

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Article Physics, Particles & Fields

Off-shell vs on-shell modelling of top quarks in photon associated production

G. Bevilacqua et al.

JOURNAL OF HIGH ENERGY PHYSICS (2020)

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Article Physics, Particles & Fields

Photon pair production in gluon fusion: top quark effects at NLO with threshold matching

Long Chen et al.

JOURNAL OF HIGH ENERGY PHYSICS (2020)

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Impact of isolation and fiducial cuts on qT and N-jettiness subtractions

Markus A. Ebert et al.

JOURNAL OF HIGH ENERGY PHYSICS (2020)

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Isolated photon and photon plus jet production at NNLO QCD accuracy

Xuan Chen et al.

JOURNAL OF HIGH ENERGY PHYSICS (2020)

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Triple Higgs production at hadron colliders at NNLO in QCD

Daniel de Florian et al.

JOURNAL OF HIGH ENERGY PHYSICS (2020)

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The gluon-fusion production of Higgs boson pair: (NLO)-L-3 QCD corrections and top-quark mass effects

Long-Bin Chen et al.

JOURNAL OF HIGH ENERGY PHYSICS (2020)

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Higgs-pair production via gluon fusion at hadron colliders: NLO QCD corrections

Julien Baglio et al.

JOURNAL OF HIGH ENERGY PHYSICS (2020)

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Article Physics, Particles & Fields

The one-loop amplitudes for Higgs+4 partons with full mass effects

Lucy Budge et al.

JOURNAL OF HIGH ENERGY PHYSICS (2020)

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MiNNLOPS: a new method to match NNLO QCD to parton showers

Pier Francesco Monni et al.

JOURNAL OF HIGH ENERGY PHYSICS (2020)

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Exact quark-mass dependence of the Higgs-gluon form factor at three loops in QCD

Michal Czakon et al.

JOURNAL OF HIGH ENERGY PHYSICS (2020)

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Article Physics, Multidisciplinary

Cusp and Collinear Anomalous Dimensions in Four-Loop QCD from Form Factors

Andreas von Manteuffel et al.

PHYSICAL REVIEW LETTERS (2020)

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Article Physics, Multidisciplinary

Top Quark Mass Effects in Higgs Boson Production at Four-Loop Order: Virtual Corrections

Joshua Davies et al.

PHYSICAL REVIEW LETTERS (2020)

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Article Physics, Multidisciplinary

Two-Loop Four-Graviton Scattering Amplitudes

S. Abreu et al.

PHYSICAL REVIEW LETTERS (2020)

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Article Astronomy & Astrophysics

W+W- production at the LHC: NLO QCD corrections to the loop-induced gluon fusion channel

Massimiliano Grazzini et al.

PHYSICS LETTERS B (2020)

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Article Astronomy & Astrophysics

Higgs boson pair production via gluon fusion at N3LO in QCD

Long-Bin Chen et al.

PHYSICS LETTERS B (2020)

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NNLO zero-jettiness beam and soft functions to higher orders in the dimensional-regularization parameter ε

Daniel Baranowski

EUROPEAN PHYSICAL JOURNAL C (2020)

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Article Physics, Particles & Fields

Light quark mediated Higgs boson threshold production in the next-to-leading logarithmic approximation

Charalampos Anastasiou et al.

JOURNAL OF HIGH ENERGY PHYSICS (2020)

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Article Physics, Particles & Fields

The complete set of two-loop master integrals for Higgs plus jet production in QCD

H. Frellesvig et al.

JOURNAL OF HIGH ENERGY PHYSICS (2020)

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Diphoton production in vector-boson scattering at the LHC at next-to-leading order QCD

Francisco Campanario et al.

JOURNAL OF HIGH ENERGY PHYSICS (2020)

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Using neural networks for efficient evaluation of high multiplicity scattering amplitudes

Simon Badger et al.

JOURNAL OF HIGH ENERGY PHYSICS (2020)

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Polarized q(q)over-bar → Z+Higgs amplitudes at two loops in QCD: the interplay between vector and axial vector form factors and a pitfall in applying a non-anticommuting γ5

Taushif Ahmed et al.

JOURNAL OF HIGH ENERGY PHYSICS (2020)

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Leptons in the proton

Luca Buonocore et al.

JOURNAL OF HIGH ENERGY PHYSICS (2020)

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Top-quark pair hadroproduction at NNLO: differential predictions with the (MS)over-bar mass

Stefano Catani et al.

JOURNAL OF HIGH ENERGY PHYSICS (2020)

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The simplest of them all: t$(t)over-bar-$W± at NLO accuracy in QCD

Giuseppe Bevilacqua et al.

JOURNAL OF HIGH ENERGY PHYSICS (2020)

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Correction Physics, Multidisciplinary

Direct Photon Production at Next-to-Next-to-Leading Order (vol 118, 222001, 2017)

John M. Campbell et al.

PHYSICAL REVIEW LETTERS (2020)

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Higgs Transverse Momentum with a Jet Veto: A Double-Differential Resummation

Pier Francesco Monni et al.

PHYSICAL REVIEW LETTERS (2020)

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Article Physics, Multidisciplinary

Higgs Boson Production in Bottom-Quark Fusion to Third Order in the Strong Coupling

Claude Duhr et al.

PHYSICAL REVIEW LETTERS (2020)

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CP Properties of Higgs Boson Interactions with Top Quarks in the (tt)over-barH and tH Processes Using H → γγ with the ATLAS Detector

G. Aad et al.

PHYSICAL REVIEW LETTERS (2020)

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Article Astronomy & Astrophysics

Approximate four-loop QCD corrections to the Higgs-boson production cross section

G. Das et al.

PHYSICS LETTERS B (2020)

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Article Astronomy & Astrophysics

The four-loop cusp anomalous dimension from the N=4 Sudakov form factor

Tobias Huber et al.

PHYSICS LETTERS B (2020)

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Review Physics, Multidisciplinary

Electroweak radiative corrections for collider physics

Ansgar Denner et al.

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS (2020)

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Measurements of the Higgs boson inclusive and differential fiducial cross sections in the 4l decay channel at √s=13 TeV

M. Aaboud et al.

EUROPEAN PHYSICAL JOURNAL C (2020)

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Subleading EW corrections and spin-correlation effects in ttW multi-lepton signatures

Rikkert Frederix et al.

EUROPEAN PHYSICAL JOURNAL C (2020)

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Parton-shower effects in Higgs production via vector-boson fusion

Barbara Jaeger et al.

EUROPEAN PHYSICAL JOURNAL C (2020)

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Electroweak corrections to the angular coefficients in finite-pT Z-boson production and dilepton decay

Rikkert Frederix et al.

EUROPEAN PHYSICAL JOURNAL C (2020)

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NLO QCD plus NLO EW corrections to diboson production matched to parton shower

Mauro Chiesa et al.

EUROPEAN PHYSICAL JOURNAL C (2020)

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Collinear electroweak radiation in antenna parton showers

Ronald Kleiss et al.

EUROPEAN PHYSICAL JOURNAL C (2020)

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Observation of the Production of Three Massive Gauge Bosons at √s=13 TeV

A. M. Sirunyan et al.

PHYSICAL REVIEW LETTERS (2020)

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Mixed QCD⊗QED corrections to exclusive Drell Yan production using the qT -subtraction method

Leandro Cieri et al.

JOURNAL OF HIGH ENERGY PHYSICS (2020)

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N-jettiness beam functions at N3LO

Markus A. Ebert et al.

JOURNAL OF HIGH ENERGY PHYSICS (2020)

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Article Physics, Particles & Fields

Polarized electroweak bosons in W+W- production at the LHC including NLO QCD effects

Ansgar Denner et al.

JOURNAL OF HIGH ENERGY PHYSICS (2020)

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Article Physics, Particles & Fields

NLO QCD plus EW predictions for tHj and tZj production at the LHC

Davide Pagani et al.

JOURNAL OF HIGH ENERGY PHYSICS (2020)

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A non-linear EFT description of gg → H H at NLO interfaced to POWHEG

Gudrun Heinrich et al.

JOURNAL OF HIGH ENERGY PHYSICS (2020)

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On the impact of non-factorisable corrections in VBF single and double Higgs production

Frederic A. Dreyer et al.

JOURNAL OF HIGH ENERGY PHYSICS (2020)

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Xsec: the cross-section evaluation code

Andy Buckley et al.

EUROPEAN PHYSICAL JOURNAL C (2020)

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Lepton-Quark Collisions at the Large Hadron Collider

Luca Buonocore et al.

PHYSICAL REVIEW LETTERS (2020)

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Predictions for Z-Boson Production in Association with a b-Jet at O(αs3)

R. Gauld et al.

PHYSICAL REVIEW LETTERS (2020)

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Next-to-Next-to-Leading Order Mixed QCD-Electroweak Corrections to on-Shell Z Production

Roberto Bonciani et al.

PHYSICAL REVIEW LETTERS (2020)

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Article Astronomy & Astrophysics

Multipole photon radiation in the Vincia parton shower

Peter Skands et al.

PHYSICS LETTERS B (2020)

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Mixed QCD-electroweak corrections to on-shell Z production at the LHC

Federico Buccioni et al.

PHYSICS LETTERS B (2020)

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NNLO QCD corrections to jet production in deep inelastic scattering (vol 07, 018, 2017)

James Currie et al.

JOURNAL OF HIGH ENERGY PHYSICS (2020)

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PineAPPL: combining EW and QCD corrections for fast evaluation of LHC processes

S. Carrazza et al.

JOURNAL OF HIGH ENERGY PHYSICS (2020)

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Mixed NNLO QCDxelectroweak corrections of O(Nfαsα) to single-W/Z production at the LHC

Stefan Dittmaier et al.

JOURNAL OF HIGH ENERGY PHYSICS (2020)

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Accurate single- and double-differential resummation of colour-singlet processes with MATRIX plus RADISH: W+W- production at the LHC

Stefan Kallweit et al.

JOURNAL OF HIGH ENERGY PHYSICS (2020)

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Evidence for tttt production in the multilepton final state in proton-proton collisions at s=13 TeV with the ATLAS detector

G. Aad et al.

EUROPEAN PHYSICAL JOURNAL C (2020)

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Charged current Drell-Yan production at N3LO

Claude Duhr et al.

JOURNAL OF HIGH ENERGY PHYSICS (2020)

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Loop-induced ZZ production at the LHC: An improved description by matrix-element matching

Congqiao Li et al.

PHYSICAL REVIEW D (2020)

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Two-loop mixed QCD-EW corrections to gg → Hg

Marco Bonetti et al.

JOURNAL OF HIGH ENERGY PHYSICS (2020)

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Next-to-leading order QCD corrections to W+W-γ and ZZγ production with leptonic decays

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Dominant QCD Backgrounds in Higgs Boson Analyses at the LHC: A Study of pp → t(t)over-bar+2 Jets at Next-to-Leading Order

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NLO QCD corrections to WZ plus jet production with leptonic decays

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JOURNAL OF HIGH ENERGY PHYSICS (2010)

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NLO single-top production matched with shower in POWHEG: s- and t-channel contributions(111, 2009)

Simone Alioli et al.

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W boson production at hadron colliders: the lepton charge asymmetry in NNLO QCD

Stefano Catani et al.

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NLO QCD corrections to t(t)over-barb(b)over-bar production at the LHC: 2. Full hadronic results

A. Bredenstein et al.

JOURNAL OF HIGH ENERGY PHYSICS (2010)

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VBFNLO: A parton level Monte Carlo for processes with electroweak bosons

K. Arnold et al.

COMPUTER PHYSICS COMMUNICATIONS (2009)

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NLO-QCD corrections to Wγj production

F. Campanario et al.

EPL (2009)

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Narrow-width approximation accuracy

C. F. Uhlemann et al.

NUCLEAR PHYSICS B (2009)

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Next-to-leading order QCD predictions for W+3-jet distributions at hadron colliders

C. F. Berger et al.

PHYSICAL REVIEW D (2009)

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Associated production of a W boson and one b jet

J. Campbell et al.

PHYSICAL REVIEW D (2009)

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Electroweak and finite quark-mass effects on the Higgs boson transverse momentum distribution

Wai-Yee Keung et al.

PHYSICAL REVIEW D (2009)

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W+3 jet production at the Tevatron

R. Keith Ellis et al.

PHYSICAL REVIEW D (2009)

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W- and Z-boson production with a massive bottom-quark pair at the Large Hadron Collider

F. Febres Cordero et al.

PHYSICAL REVIEW D (2009)

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Next-to-leading order QCD corrections to W+W+ jj and W-W- jj production via weak-boson fusion

B. Jaeger et al.

PHYSICAL REVIEW D (2009)

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Precise Predictions for W+3 Jet Production at Hadron Colliders

C. F. Berger et al.

PHYSICAL REVIEW LETTERS (2009)

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Vector Boson Production at Hadron Colliders: A Fully Exclusive QCD Calculation at Next-to-Next-to-Leading Order

Stefano Catani et al.

PHYSICAL REVIEW LETTERS (2009)

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Next-To-Leading Order QCD Corrections to pp → t(t)over-barb(b)over-bar + X at the LHC

A. Bredenstein et al.

PHYSICAL REVIEW LETTERS (2009)

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Assault on the NLO wishlist: pp → t(t)over-barb(b)over-bar

G. Bevilacqua et al.

JOURNAL OF HIGH ENERGY PHYSICS (2009)

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Generalized unitarity at work: first NLO QCD results for hadronic W+3 jet production

R. Keith Ellis et al.

JOURNAL OF HIGH ENERGY PHYSICS (2009)

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HPro: A NLO Monte-Carlo for Higgs production via gluon fusion with finite heavy quark masses

Charalampos Anastasiou et al.

JOURNAL OF HIGH ENERGY PHYSICS (2009)

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Mixed QCD-electroweak corrections to Higgs boson production in gluon fusion

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JOURNAL OF HIGH ENERGY PHYSICS (2009)

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Automation of next-to-leading order computations in QCD: the FKS subtraction

Rikkert Frederix et al.

JOURNAL OF HIGH ENERGY PHYSICS (2009)

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NLO single-top production matched with shower in POWHEG: s- and t-channel contributions

Simone Alioli et al.

JOURNAL OF HIGH ENERGY PHYSICS (2009)

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Automated implementation of on-shell methods for one-loop amplitudes

C. F. Berger et al.

PHYSICAL REVIEW D (2008)

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QCD corrections to charged triple vector boson production with leptonic decay

F. Campanario et al.

PHYSICAL REVIEW D (2008)

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Next-to-leading-order QCD corrections to WW plus jet production at hadron colliders

S. Dittmaier et al.

PHYSICAL REVIEW LETTERS (2008)

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QCD corrections to hadronic WWZ production with leptonic decays

V. Hankele et al.

PHYSICS LETTERS B (2008)

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NNLO predictions for the Higgs boson signal in the H → WW → lνlν and H → ZZ → 4l decay channels

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JOURNAL OF HIGH ENERGY PHYSICS (2008)

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NLO QCD corrections to tri-boson production

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JOURNAL OF HIGH ENERGY PHYSICS (2008)

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Algorithm FIRE - Feynman Integral REduction

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JOURNAL OF HIGH ENERGY PHYSICS (2008)

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Next-to-leading order predictions for WW plus jet distributions at the LHC

John M. Campbell et al.

JOURNAL OF HIGH ENERGY PHYSICS (2007)

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Strong and electroweak corrections to the production of a Higgs Boson+2 jets via weak interactions at the large hadron collider

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PHYSICAL REVIEW LETTERS (2007)

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Feynman diagrams and differential equations

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INTERNATIONAL JOURNAL OF MODERN PHYSICS A (2007)

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Next-to-leading-order QCD corrections to t(t)over-bar plus jet production at Hadron Colliders

S. Dittmaier et al.

PHYSICAL REVIEW LETTERS (2007)

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Next-to-next-to-leading-order subtraction formalism in hadron collisions and its application to Higgs-boson production at the large hadron collider

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PHYSICAL REVIEW LETTERS (2007)

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Next-to-leading-order QCD corrections to W+Z and W-Z production via vector-boson fusion

Giuseppe Bozzi et al.

PHYSICAL REVIEW D (2007)

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Analytic results for virtual QCD corrections to Higgs production and decay

Ugo Aglietti et al.

JOURNAL OF HIGH ENERGY PHYSICS (2007)

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Two-loop amplitudes and master integrals for the production of a Higgs boson via a massive quark and a scalar-quark loop

Charalampos Anastasiou et al.

JOURNAL OF HIGH ENERGY PHYSICS (2007)

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NLO QCD corrections to W boson production with a massive b-quark jet pair at the Fermilab Tevatron p(p)over-bar collider

F. Febres Cordero et al.

PHYSICAL REVIEW D (2006)

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Infrared-safe definition of jet flavour

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Next-to-leading order QCD corrections to W+W- production via vector-boson fusion

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QCD decoupling at four loops

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Next-to-leading order QCD corrections to Z boson pair production via vector-boson fusion

Barbara Jaeger et al.

PHYSICAL REVIEW D (2006)

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Transverse-momentum resummation and the spectrum of the Higgs boson at the LHC

G Bozzi et al.

NUCLEAR PHYSICS B (2006)

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Four-loop decoupling relations for the strong coupling

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JOURNAL OF HIGH ENERGY PHYSICS (2006)

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A new method for real radiation at next-to-next-to-leading order

C Anastasiou et al.

PHYSICAL REVIEW D (2004)

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Exclusive Higgs boson production with bottom quarks at hadron colliders

S Dawson et al.

PHYSICAL REVIEW D (2004)

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NNLO QCD corrections to the Higgs-strahlung processes at hadron colliders

O Brein et al.

PHYSICS LETTERS B (2004)

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Higgs radiation off bottom quarks at the Fermilab Tevatron and the CERN LHC -: art. no. 074010

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PHYSICAL REVIEW D (2004)

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Numerical evaluation of phase space integrals by sector decomposition

T Binoth et al.

NUCLEAR PHYSICS B (2004)

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QCD corrections to electroweak lνljj and l+l-jj production -: art. no. 093004

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PHYSICAL REVIEW D (2004)

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Next-to-leading order QCD predictions for W+2 jet and Z+2 jet production at the CERN LHC -: art. no. 094021

J Campbell et al.

PHYSICAL REVIEW D (2003)

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Electroweak radiative corrections to associated WH and ZH production at hadron colliders -: art. no. 073003

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PHYSICAL REVIEW D (2003)

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NNLO corrections to the total cross section for Higgs boson production in hadron-hadron collisions

V Ravindran et al.

NUCLEAR PHYSICS B (2003)

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Associated Higgs boson production with top quarks at the CERN Large Hadron Collider: NLO QCD corrections

S Dawson et al.

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Higgs boson production in bottom quark fusion at next-to-next-to-leading order

RV Harlander et al.

PHYSICAL REVIEW D (2003)

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NLO QCD corrections to t(t)over-bar-H production in hadron collisions

W Beenakker et al.

NUCLEAR PHYSICS B (2003)

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A numerical method for NNLO calculations

G Heinrich

NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS (2003)

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Next-to-leading order calculation of three-jet observables in hadron-hadron collisions

Z Nagy

PHYSICAL REVIEW D (2003)

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Higgs boson production at hadron colliders in NNLO QCD

C Anastasiou et al.

NUCLEAR PHYSICS B (2002)

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Next-to-leading order corrections to W+2 jet and Z+2 jet production at hadron colliders -: art. no. 113007

J Campbell et al.

PHYSICAL REVIEW D (2002)

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Next-to-next-to-leading order higgs production at hadron colliders

RV Harlander et al.

PHYSICAL REVIEW LETTERS (2002)

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Higgs radiation off top quarks at the Tevatron and the LHC -: art. no. 201805

W Beenakker et al.

PHYSICAL REVIEW LETTERS (2001)

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Next-to-leading order results for t(t)over-bar-h production at the Tevatron -: art. no. 201804

L Reina et al.

PHYSICAL REVIEW LETTERS (2001)

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One-loop leading logarithms in electroweak radiative corrections - I. Results

A Denner et al.

EUROPEAN PHYSICAL JOURNAL C (2001)

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High-precision calculation of multiloop Feynman integrals by difference equations

S Laporta

INTERNATIONAL JOURNAL OF MODERN PHYSICS A (2000)

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Electroweak radiative corrections to e+e- → WW → 4 fermions in double-pole approximation -: the RACOONWW approach

A Denner et al.

NUCLEAR PHYSICS B (2000)

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An automatized algorithm to compute infrared divergent multi-loop integrals

T Binoth et al.

NUCLEAR PHYSICS B (2000)

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Differential equations for two-loop four-point functions

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NUCLEAR PHYSICS B (2000)

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