Test of Lepton Universality in b → sl+ l- Decays

Article Astronomy & Astrophysics

Measurement of lepton universality parameters in B plus ? K plus l + l - and B0? K?0l+l- decays

R. Aaij et al.

Summary: A simultaneous analysis of the B→Ke'e- and B0→K*0e'e- decays is performed to test muonelectron universality. The results are compatible with the predictions of the Standard Model.

PHYSICAL REVIEW D (2023)

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Article Physics, Multidisciplinary

Test of lepton universality in beauty-quark decays

R. Aaij et al.

NATURE PHYSICS (2022)

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Article Physics, Multidisciplinary

Tests of Lepton Universality Using B0 → KS0l+ l- and B+ → K*+l+l- Decays

R. Aaij et al.

Summary: This study presents tests of lepton universality in B-0 -> K(S)(0)l(+)l(-) and B+ -> K*(+)l(+)l(-) decays, where l is either an electron or a muon. The differential branching fractions of B-0 -> K(S)(0)e(+)e(-) and B+ -> K*(+)e(+)e(-) decays are measured using proton-proton collision data recorded by the LHCb experiment. The results are consistent with the standard model and previous tests of lepton universality, and the first observations of B-0 -> K(S)(0)e(+)e(-) and B+ -> K*(+)e(+)e(-) decays are reported.

PHYSICAL REVIEW LETTERS (2022)

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Review Physics, Multidisciplinary

REVIEW OF PARTICLE PHYSICS

R. L. Workman et al.

Summary: The Review provides a comprehensive summary of particle physics and cosmology, including measurements, searches for hypothetical particles, and summaries of properties and search limits. It consists of two volumes, with Summary Tables, review articles, and Particle Listings.

PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS (2022)

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Article Physics, Particles & Fields

QED in (B)over-bar →<(K)over bar>l +l- LFU ratios: theory versus experiment, a Monte Carlo study

Gino Isidori et al.

Summary: Using meson effective theory and a Monte Carlo framework, this study investigates the QED corrections in (B) over bar (0) -> (K) over barl+l(-). The comparison with the general-purpose photon-shower tool PHOTOS shows a good agreement in the rare mode, and interference effects in the dilepton invariant mass region are found to be small. The impact of charmonium resonances is also discussed.

JOURNAL OF HIGH ENERGY PHYSICS (2022)

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Article Physics, Particles & Fields

EOS: a software for flavor physics phenomenology

D. van Dyk et al.

Summary: EOS is an open-source software for various computational tasks in flavor physics, including theory predictions, Bayesian inference, and simulation. It combines a C++ back-end and a Python front-end to provide both high-performance computations and ease of use.

EUROPEAN PHYSICAL JOURNAL C (2022)

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Article Astronomy & Astrophysics

Precision measurement of the W boson decay branching fractions in proton-proton collisions at √s=13 TeV

A. Tumasyan et al.

Summary: The leptonic and inclusive hadronic decay branching fractions of the W boson were measured using proton-proton collision data collected at p s = 13 TeV by the CMS experiment at the CERN LHC. The results indicate that the branching fractions of the W boson decaying into electron, muon, and tau lepton final states are consistent with lepton flavor universality for the weak interaction. Additionally, several standard model quantities were determined based on the hadronic branching fraction.

PHYSICAL REVIEW D (2022)

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Article Physics, Multidisciplinary

Branching Fraction Measurements of the Rare Bs0 → φμ+μ- and Bs0→ f2′ (1525)μ+μ- Decays

R. Aaij et al.

Summary: The branching fraction of the rare B-s(0) -> phi mu(+)mu(-) decay was measured using data from the LHCb experiment, showing a significant deviation from the standard model prediction. Additionally, the first observation of the rare B-s(0)-> f(2)' (1525)mu(+)mu(-) decay was reported with a statistical significance of 9 standard deviations.

PHYSICAL REVIEW LETTERS (2021)

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Article Physics, Particles & Fields

Test of lepton flavor universality and search for lepton flavor violation in B → Kll decays

Y. Li et al.

Summary: The paper presents measurements of the branching fractions for B meson decays to K meson and lepton pairs mu(+/-)mu(-/+) and e(+/-)e(-/+), and their ratio R-K. The RK ratio is measured in five different bins of dilepton invariant-mass-squared q(2), and all results are consistent with Standard Model predictions. Additionally, searches for lepton-flavor-violating B -> K mu(+/-)e(-/+) decays were conducted, with upper limits set on the branching fraction at 90% confidence level.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Article Physics, Particles & Fields

Angular analysis of the rare decay Bs0 → φμ+μ-

R. Aaij et al.

Summary: An angular analysis of the rare decay B-s(0) -> phi mu(+)mu(-) was conducted using data from proton-proton collisions at the LHCb experiment. The results, obtained at center-of-mass energies of 7, 8, and 13TeV, are consistent with Standard Model predictions.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Article Physics, Multidisciplinary

Test of Lepton-Flavor Universality in B → K*l+l- Decays at Belle

S. Wehle et al.

Summary: The study presents a measurement of R-K(*), including the branching fraction ratio for both charged and neutral B mesons. Absolute branching fractions for individual modes in different bins of the squared dilepton invariant mass were also reported. The obtained results are in line with standard model expectations.

PHYSICAL REVIEW LETTERS (2021)

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Article Physics, Multidisciplinary

Angular Analysis of the B+ → K*+μ+ μ- Decay

R. Aaij et al.

Summary: In this study, an angular analysis of the B+ -> K*(+)(-> K-S(0)pi(+))mu(+) mu(-) decay was conducted using data from the LHCb experiment. Local deviations from standard model predictions were observed, similar to previous analyses of related decays. The global tension depends on the effective couplings considered and the choice of theory nuisance parameters.

PHYSICAL REVIEW LETTERS (2021)

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Article Physics, Multidisciplinary

Test of the universality of τ and μ lepton couplings in W-boson decays with the ATLAS detector

G. Aad et al.

Summary: The standard model of particle physics summarizes our current best understanding of physics at the smallest scales, and through experimental measurements, it has been found that the coupling of different generations of leptons to electroweak gauge bosons is universal. Utilizing data from proton-proton collisions recorded with the ATLAS detector at 13 TeV, our measurement results are in agreement with the assumption of universal lepton couplings in the standard model.

NATURE PHYSICS (2021)

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Article Physics, Particles & Fields

Test of lepton universality with Λb0 → pK- l+l-

R. Aaij et al.

JOURNAL OF HIGH ENERGY PHYSICS (2020)

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Article Physics, Multidisciplinary

Measurement of CP-Averaged Observables in the B0 → K☆0μ+μ- Decay

R. Aaij et al.

PHYSICAL REVIEW LETTERS (2020)

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Article Physics, Particles & Fields

QED corrections in B→Kl+l- at the double-differential level

Gino Isidori et al.

JOURNAL OF HIGH ENERGY PHYSICS (2020)

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Article Physics, Multidisciplinary

Search for Lepton-Universality Violation in B+ → K+l+l- Decays

R. Aaij et al.

PHYSICAL REVIEW LETTERS (2019)

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Article Astronomy & Astrophysics

Measurement of angular parameters from the decay B-0 -> K*(0)mu(+)mu(-) in proton-proton collisions at root s=8 TeV

A. M. Sirunyan et al.

PHYSICS LETTERS B (2018)

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Article Physics, Particles & Fields

Measurement of Z → τ+τ- production in proton-proton collisions at √s=8 TeV

R. Aaij et al.

JOURNAL OF HIGH ENERGY PHYSICS (2018)

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Article Physics, Particles & Fields

Angular analysis of B-d(0) -> K* mu(+)mu(-) decays in pp collisions at root s=8 TeV with the ATLAS detector

M. Aaboud et al.

JOURNAL OF HIGH ENERGY PHYSICS (2018)

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Correction Physics, Particles & Fields

Differential branching fraction and angular analysis of Lambda(0)(b) -> Lambda mu(+)mu(-) decays

R. Aaij et al.

JOURNAL OF HIGH ENERGY PHYSICS (2018)

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Article Physics, Particles & Fields

Status of the B → K* μ+ μ- anomaly after Moriond 2017

Wolfgang Altmannshofer et al.

EUROPEAN PHYSICAL JOURNAL C (2017)

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Article Physics, Particles & Fields

Precision measurement and interpretation of inclusive W+, W- and Z/γ* production cross sections with the ATLAS detector

M. Aaboud et al.

EUROPEAN PHYSICAL JOURNAL C (2017)

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Article Physics, Multidisciplinary

Lepton-Flavor-Dependent Angular Analysis of B → K*l+l-

S. Wehle et al.

PHYSICAL REVIEW LETTERS (2017)

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Article Physics, Particles & Fields

Test of lepton universality with B0 → K*0l+l- decays

R. Aaij et al.

JOURNAL OF HIGH ENERGY PHYSICS (2017)

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Correction Physics, Particles & Fields

Measurements of the S-wave fraction in B0 → K+π-μ+μ- decays and the B0 → K*(892)0μ+μ- differential branching fraction (vol 11, 047, 2016)

R. Aaij et al.

JOURNAL OF HIGH ENERGY PHYSICS (2017)

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Article Physics, Particles & Fields

Hadronic uncertainties in B → K* μ+μ-: a state-of-the-art analysis

Bernat Capdevila et al.

JOURNAL OF HIGH ENERGY PHYSICS (2017)

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Article Astronomy & Astrophysics

Measuring the breaking of lepton flavor universality in B → K*l+l-

Nicola Serra et al.

PHYSICAL REVIEW D (2017)

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Article Computer Science, Interdisciplinary Applications

PHOTOS interface in C plus plus Technical and physics documentation

N. Davidson et al.

COMPUTER PHYSICS COMMUNICATIONS (2016)

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Article Physics, Particles & Fields

On the standard model predictions for RK and RK

Marzia Bordone et al.

EUROPEAN PHYSICAL JOURNAL C (2016)

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Article Physics, Particles & Fields

B-decay anomalies in a composite leptoquark model

Riccardo Barbieri et al.

EUROPEAN PHYSICAL JOURNAL C (2016)

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Article Astronomy & Astrophysics

Angular analysis of the decay B0 → K*0μ+μ- from pp collisions at √s=8 TeV

V. Khachatryan et al.

PHYSICS LETTERS B (2016)

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Article Physics, Particles & Fields

Measurements of the S-wave fraction in B0 → K+ π- μ+ μ- decays and the B0 → K*(892)0 μ+ μ- differential branching fraction

R. Aaij et al.

JOURNAL OF HIGH ENERGY PHYSICS (2016)

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Article Physics, Particles & Fields

Angular analysis of the B0 → K*0 μ+ μ- decay using 3 fb-1 of integrated luminosity

R. Aaij et al.

JOURNAL OF HIGH ENERGY PHYSICS (2016)

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Article Physics, Particles & Fields

Measurement of forward W → eν production in pp collisions at √s=8 TeV

R. Aaij et al.

JOURNAL OF HIGH ENERGY PHYSICS (2016)

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Article Physics, Particles & Fields

Assessing lepton-flavour non-universality from B → K*ll angular analyses

Bernat Capdevila et al.

JOURNAL OF HIGH ENERGY PHYSICS (2016)

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Article Astronomy & Astrophysics

Reassessing the discovery potential of the B → K*l+l- decays in the large-recoil region: SM challenges and BSM opportunities

S. Jaeger et al.

PHYSICAL REVIEW D (2016)

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Review Physics, Nuclear

LHCb detector performance

R. Aaij et al.

INTERNATIONAL JOURNAL OF MODERN PHYSICS A (2015)

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Article Astronomy & Astrophysics

Family nonuniversal Z′ models with protected flavor-changing interactions

Alejandro Celis et al.

PHYSICAL REVIEW D (2015)

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Article Physics, Multidisciplinary

Explaining h → μ±τ∓, B → K*μ+μ-, and B → Kμ+μ-/B → Ke+e- in a Two-Higgs-Doublet Model with Gauged Lμ-Lτ

Andreas Crivellin et al.

PHYSICAL REVIEW LETTERS (2015)

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Article Physics, Particles & Fields

Differential branching fraction and angular analysis of Λb0 → Λμ+μ- decays

R. Aaij et al.

JOURNAL OF HIGH ENERGY PHYSICS (2015)

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Article Physics, Particles & Fields

Angular analysis and differential branching fraction of the decay Bs0 → φμ+μ-

R. Aaij et al.

JOURNAL OF HIGH ENERGY PHYSICS (2015)

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Article Physics, Particles & Fields

Clues for flavor from rare lepton and quark decays

Ivo de Medeiros Varzielas et al.

JOURNAL OF HIGH ENERGY PHYSICS (2015)

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Article Physics, Particles & Fields

Lepton flavor non-universality in B-meson decays from a U(2) flavor model

Adam Falkowski et al.

JOURNAL OF HIGH ENERGY PHYSICS (2015)

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Article Physics, Particles & Fields

Composite leptoquarks and anomalies in B-meson decays

Ben Gripaios et al.

JOURNAL OF HIGH ENERGY PHYSICS (2015)

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Proceedings Paper Physics, Nuclear

LHCb Topological Trigger Reoptimization

Tatiana Likhomanenko et al.

21ST INTERNATIONAL CONFERENCE ON COMPUTING IN HIGH ENERGY AND NUCLEAR PHYSICS (CHEP2015), PARTS 1-9 (2015)

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Article Astronomy & Astrophysics

RK and future b → sll physics beyond the standard model opportunities

Gudrun Hiller et al.

PHYSICAL REVIEW D (2014)

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Article Astronomy & Astrophysics

Quark flavor transitions in Lμ - Lτ models

Wolfgang Altmannshofer et al.

PHYSICAL REVIEW D (2014)

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Article Physics, Multidisciplinary

Test of Lepton Universality Using B+ → K+l+l- Decays

R. Aaij et al.

PHYSICAL REVIEW LETTERS (2014)

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Article Physics, Particles & Fields

Differential branching fractions and isospin asymmetries of B → K (*) μ + μ - decays

R. Aaij et al.

JOURNAL OF HIGH ENERGY PHYSICS (2014)

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Article Physics, Particles & Fields

Hint of lepton flavou non-universality in B meson decays

Diptimoy Ghosh et al.

JOURNAL OF HIGH ENERGY PHYSICS (2014)

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Article Instruments & Instrumentation

Efficient, reliable and fast high-level triggering using a bonsai boosted decision tree

V. V. Gligorov et al.

JOURNAL OF INSTRUMENTATION (2013)

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Review Instruments & Instrumentation

The LHCb trigger and its performance in 2011

R. Aaij et al.

JOURNAL OF INSTRUMENTATION (2013)

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Review Physics, Multidisciplinary

Electroweak measurements in electron positron collisions at W-boson-pair energies at LEP

S. Schael et al.

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS (2013)

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Article Astronomy & Astrophysics

Measurement of branching fractions and rate asymmetries in the rare decays B → K(*)l+l-

J. P. Lees et al.

PHYSICAL REVIEW D (2012)

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Article Computer Science, Interdisciplinary Applications

A brief introduction to PYTHIA 8.1

Torbjoern Sjoestrand et al.

COMPUTER PHYSICS COMMUNICATIONS (2008)

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Review Instruments & Instrumentation

The LHCb Detector at the LHC

A. Augusto Alves et al.

JOURNAL OF INSTRUMENTATION (2008)

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Angular distributions of (B)over-bar→K(l)over-barl decays

Christoph Bobeth et al.

JOURNAL OF HIGH ENERGY PHYSICS (2007)

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Review Physics, Multidisciplinary

Precision electroweak measurements on the Z resonance

S Schael et al.

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS (2006)

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Article Astronomy & Astrophysics

More model-independent analysis of b→s processes -: art. no. 074020

G Hiller et al.

PHYSICAL REVIEW D (2004)

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Article Astronomy & Astrophysics

Rate difference between b -> s mu(+)mu(-) and b -> se(+)e(-) in supersymmetry with large tan beta

YL Wang et al.

PHYSICAL REVIEW D (2003)

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Article Computer Science, Interdisciplinary Applications

Kernel estimation in high-energy physics

K Cranmer

COMPUTER PHYSICS COMMUNICATIONS (2001)

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Article Instruments & Instrumentation

The EvtGen particle decay simulation package

DJ Lange

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT (2001)

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Article Physics, Multidisciplinary

Measurement of the W→τν production cross section in p(p)over-bar collisions at √s=1.8 TeV

B Abbott et al.

PHYSICAL REVIEW LETTERS (2000)

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Test of Lepton Universality in b → sl+ l- Decays

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