☆ 4.4 Article

Parton distributions with scale uncertainties: a Monte Carlo sampling approach

JOURNAL OF HIGH ENERGY PHYSICS (2023)

相关参考文献

注意：仅列出部分参考文献，下载原文获取全部文献信息。

Article Physics, Particles & Fields

Approximate N3LO parton distribution functions with theoretical uncertainties: MSHT20aN3LO PDFs

J. McGowan et al.

Summary: We present the first global analysis of parton distribution functions (PDFs) at approximate (NLO)-L-3 in the strong coupling constant alpha s, extending beyond the current highest NNLO achieved in PDF fits. We demonstrate how using the currently available knowledge surrounding the next highest order ((NLO)-L-3) in alpha s can provide consistent, justifiable and explainable approximate (NLO)-L-3 (aN(3)LO) PDFs. We show that these PDFs can be used to study the impact of using aN(3)LO PDFs on the LHC production of a Higgs boson at this order.

EUROPEAN PHYSICAL JOURNAL C (2023)

添加到收藏夹

Article Physics, Particles & Fields

A new generation of simultaneous fits to LHC data using deep learning

Shayan Iranipour et al.

Summary: This study presents a new methodology that allows for the simultaneous determination of the Parton Distribution Functions (PDFs) of the proton and any parameters that determine theoretical predictions. The methodology is based on an extension of the NNPDF4.0 neural network architecture, which enables the determination of multiple parameters simultaneously. The study demonstrates the capabilities of this methodology by fitting PDFs with a subset of Wilson coefficients within the Standard Model Effective Field Theory framework, and shows its potential for extension to other precision parameters in the standard model.

JOURNAL OF HIGH ENERGY PHYSICS (2022)

添加到收藏夹

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)

添加到收藏夹

Article Physics, Particles & Fields

The dark side of the proton

Matthew McCullough et al.

Summary: We study the sensitivity of the High-Luminosity LHC to a light baryonic dark photon B, primarily coupled to quarks, and demonstrate its potential in determining competitive bounds on dark photon parameter space by analyzing its effect on the tails of Drell-Yan invariant mass distributions.

JOURNAL OF HIGH ENERGY PHYSICS (2022)

添加到收藏夹

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)

添加到收藏夹

Article Physics, Particles & Fields

Bayesian approach to inverse problems: an application to NNPDF closure testing

Luigi Del Debbio et al.

Summary: In this study, the Bayesian approach to solution of inverse problems is discussed and applied to analyze the closure tests performed by the NNPDF collaboration. Insights gained from analytical results are used to guide the analysis of more complex non-linear problems. The study shows that the posterior probability density of the parametrized parton distributions (PDFs) can be fully determined by the NNPDF fitting procedure in the case of Gaussian distributions. New estimators are introduced to assess the statistical reliability of the closure test results, and these estimators are analyzed using the Bayesian formalism in a linear model to clarify their meaning. Results from closure tests performed with the NNPDF methodologies are presented to validate the NNPDF4.0 methodology and provide a quantitative comparison with the NNPDF3.1 methodology.

EUROPEAN PHYSICAL JOURNAL C (2022)

添加到收藏夹

Article Physics, Particles & Fields

Deuteron uncertainties in the determination of proton PDFs

Richard D. Ball et al.

Summary: This study evaluated the uncertainties due to nuclear effects on proton parton distribution functions in global fits, utilizing an iterative procedure to determine both proton and deuteron PDFs simultaneously. It was found that the impact of nuclear uncertainty on proton PDFs is minimal, and overall uncertainties are insignificant once corrections for nuclear effects are made.

EUROPEAN PHYSICAL JOURNAL C (2021)

添加到收藏夹

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)

添加到收藏夹

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)

添加到收藏夹

Article Physics, Particles & Fields

Correlation of theoretical uncertainties in PDF fits and theoretical uncertainties in predictions

Richard D. Ball et al.

Summary: This study demonstrates how correlations between theoretical uncertainties affect predictions and shows that these correlations can improve the accuracy and precision of predictions using PDFs, especially for processes with included data.

EUROPEAN PHYSICAL JOURNAL C (2021)

添加到收藏夹

Article Physics, Particles & Fields

Parton distributions in the SMEFT from high-energy Drell-Yan tails

Admir Greljo et al.

Summary: The study assessed for the first time the interplay between PDFs and EFT effects for high-mass Drell-Yan processes, finding the interaction to be moderate for the current dataset but a significant challenge for EFT analyses at the HL-LHC.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

添加到收藏夹

Article Physics, Particles & Fields

An analysis of Bayesian estimates for missing higher orders in perturbative calculations

Claude Duhr et al.

Summary: This paper thoroughly examines Bayesian approaches to estimating uncertainties in perturbation theory due to missing higher orders, proposing two significant extensions to the existing framework. The importance of interpreting perturbative scales and comparing the performance of different methods is emphasized throughout the study.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

添加到收藏夹

Article Physics, Multidisciplinary

FUTURE TESTS OF PARTON DISTRIBUTIONS

Juan Cruz-Martinez et al.

Summary: This study discusses a test of the generalization power of the methodology used in determining parton distribution functions (PDFs), evaluating the method's ability to predict specific phenomena using limited data. It investigates whether the methodology can accurately predict the rise of the unpolarized proton structure function F-2 at small x and the proton spin crisis.

ACTA PHYSICA POLONICA B (2021)

添加到收藏夹

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)

添加到收藏夹

Article Physics, Particles & Fields

Why αs cannot be determined from hadronic processes without simultaneously determining the parton distributions

Stefano Forte et al.

EUROPEAN PHYSICAL JOURNAL C (2020)

添加到收藏夹

Article Physics, Particles & Fields

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

S. Carrazza et al.

JOURNAL OF HIGH ENERGY PHYSICS (2020)

添加到收藏夹

Article Physics, Particles & Fields

Probabilistic definition of the perturbative theoretical uncertainty from missing higher orders

Marco Bonvini

EUROPEAN PHYSICAL JOURNAL C (2020)

添加到收藏夹

Article Physics, Particles & Fields

On the consistent use of scale variations in PDF fits and predictions

L. A. Harland-Lang et al.

EUROPEAN PHYSICAL JOURNAL C (2019)

添加到收藏夹

Article Physics, Particles & Fields

Parton distributions with theory uncertainties: general formalism and first phenomenological studies NNPDF Collaboration

Rabah Abdul Khalek et al.

EUROPEAN PHYSICAL JOURNAL C (2019)

添加到收藏夹

Correction Physics, Multidisciplinary

Fully Differential Vector-Boson-Fusion Higgs Production at Next-to-Next-to-Leading Order (vol 115, 082002, 2015)

Matteo Cacciari et al.

PHYSICAL REVIEW LETTERS (2018)

添加到收藏夹

Article Physics, Particles & Fields

Higgs boson production at hadron colliders at N3LO in QCD

Bernhard Mistlberger

JOURNAL OF HIGH ENERGY PHYSICS (2018)

添加到收藏夹

Article Physics, Particles & Fields

Towards ultimate parton distributions at the high-luminosity LHC

Rabah Abdul Khalek et al.

EUROPEAN PHYSICAL JOURNAL C (2018)

添加到收藏夹

Article Physics, Particles & Fields

Parton distributions from high-precision collider data

Richard D. Ball et al.

EUROPEAN PHYSICAL JOURNAL C (2017)

添加到收藏夹

Article Computer Science, Interdisciplinary Applications

APFELgrid: A high performance tool for parton density determinations

Valerio Bertone et al.

COMPUTER PHYSICS COMMUNICATIONS (2017)

添加到收藏夹

Article Physics, Multidisciplinary

Vector-Boson Fusion Higgs Production at Three Loops in QCD

Frederic A. Dreyer et al.

PHYSICAL REVIEW LETTERS (2016)

添加到收藏夹

Article Physics, Particles & Fields

On the Higgs cross section at N3LO+N3LL and its uncertainty

Marco Bonvini et al.

JOURNAL OF HIGH ENERGY PHYSICS (2016)

添加到收藏夹

Article Physics, Particles & Fields

High precision determination of the gluon fusion Higgs boson cross-section at the LHC

Charalampos Anastasiou et al.

JOURNAL OF HIGH ENERGY PHYSICS (2016)

添加到收藏夹

Article Physics, Particles & Fields

LHAPDF6: parton density access in the LHC precision era

Andy Buckley et al.

EUROPEAN PHYSICAL JOURNAL C (2015)

添加到收藏夹

Article Physics, Multidisciplinary

Higgs Boson Gluon-Fusion Production in QCD at Three Loops

Charalampos Anastasiou et al.

PHYSICAL REVIEW LETTERS (2015)

添加到收藏夹

Article Physics, Particles & Fields

Parton distributions for the LHC run II

Richard D. Ball et al.

JOURNAL OF HIGH ENERGY PHYSICS (2015)

添加到收藏夹

Article Computer Science, Interdisciplinary Applications

Top plus plus : A program for the calculation of the top-pair cross-section at hadron colliders

Michal Czakon et al.

COMPUTER PHYSICS COMMUNICATIONS (2014)

添加到收藏夹

Article Physics, Nuclear

Updated Higgs cross section at approximate N3LO

Marco Bonvini et al.

JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS (2014)

添加到收藏夹

Article Computer Science, Interdisciplinary Applications

W physics at the LHC with FEWZ 2.1

Seth Quackenbush et al.

COMPUTER PHYSICS COMMUNICATIONS (2013)

添加到收藏夹

Article Physics, Particles & Fields

Parton distributions with LHC data

Richard D. Ball et al.

NUCLEAR PHYSICS B (2013)

添加到收藏夹

Article Astronomy & Astrophysics

How well can we guess theoretical uncertainties?

Andre David et al.

PHYSICS LETTERS B (2013)

添加到收藏夹

Article Physics, Particles & Fields

Parton distribution benchmarking with LHC data

Richard D. Ball et al.

JOURNAL OF HIGH ENERGY PHYSICS (2013)

添加到收藏夹

Article Astronomy & Astrophysics

Combining QCD and electroweak corrections to dilepton production in the framework of the FEWZ simulation code

Ye Li et al.

PHYSICAL REVIEW D (2012)

添加到收藏夹

Article Computer Science, Interdisciplinary Applications

FEWZ 2.0: A code for hadronic Z production at next-to-next-to-leading order

Ryan Gavin et al.

COMPUTER PHYSICS COMMUNICATIONS (2011)

添加到收藏夹

Article Physics, Particles & Fields

Meaningful characterisation of perturbative theoretical uncertainties

Matteo Cacciari et al.

JOURNAL OF HIGH ENERGY PHYSICS (2011)

添加到收藏夹

Article Physics, Particles & Fields

A posteriori inclusion of parton density functions in NLO QCD final-state calculations at hadron colliders: the APPLGRID project

Tancredi Carli et al.

EUROPEAN PHYSICAL JOURNAL C (2010)

添加到收藏夹

Article Physics, Particles & Fields

A first unbiased global NLO determination of parton distributions and their uncertainties

Richard D. Ball et al.

NUCLEAR PHYSICS B (2010)

添加到收藏夹

Article Physics, Particles & Fields

Fitting parton distribution data with multiplicative normalization uncertainties

Richard D. Ball et al.

JOURNAL OF HIGH ENERGY PHYSICS (2010)

添加到收藏夹

Correction Physics, Particles & Fields

A determination of parton distributions with faithful uncertainty estimation (vol 809, pg 1, 2009)

Richard D. Ball et al.

NUCLEAR PHYSICS B (2009)

添加到收藏夹

© Peeref 2019-2024. All rights reserved.