Test of lepton universality in beauty-quark decays
National Institute for Subatomic Physics · University of Zurich · +116 more institutions
Abstract
Abstract The standard model of particle physics currently provides our best description of fundamental particles and their interactions. The theory predicts that the different charged leptons, the electron, muon and tau, have identical electroweak interaction strengths. Previous measurements have shown that a wide range of particle decays are consistent with this principle of lepton universality. This article presents evidence for the breaking of lepton universality in beauty-quark decays, with a significance of 3.1 standard deviations, based on proton–proton collision data collected with the LHCb detector at CERN’s Large Hadron Collider. The measurements are of processes in which a beauty meson transforms…
Citation impact
- FWCI
- 39.94
- Percentile
- 100%
- References
- 192
Authors
957Topics & keywords
- Physics
- Lepton
- Particle physics
- Muon
- Universality (dynamical systems)
- Quark
- Nuclear physics
- Large Hadron Collider
Funding
- NSNational Science FoundationAwards: CNRS/IN2P3, 89233218CNA000001
- UDU.S. Department of EnergyAward: 89233218CNA000001
- AVAlexander von Humboldt-Stiftung
- CCERN
- URUK Research and Innovation
- NENational Energy Research Scientific Computing Center
- INInstitutul National de Cercetare-Dezvoltare pentru Fizica si Inginerie Nucleara 'Horia Hulubei'
- LTLeverhulme Trust
- RSRoyal Society
- ECEuropean Commission
- DFDeutsche Forschungsgemeinschaft
- ANAgence Nationale de la Recherche
- SNSchweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung
- NNNational Natural Science Foundation of ChinaAward: IN2P3
- RFRussian Foundation for Basic Research
- CDCoordenação de Aperfeiçoamento de Pessoal de Nível SuperiorAward: 89233218CNA000001
- BFBundesministerium für Bildung und Forschung
- NONederlandse Organisatie voor Wetenschappelijk Onderzoek
- GVGeneralitat Valenciana
- CNConselho Nacional de Desenvolvimento Científico e Tecnológico
- MMax-Planck-Gesellschaft
- MEMinisterstwo Edukacji i Nauki
- FCFundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro
- NANational Academy of Sciences of Ukraine
- CNCentre National de la Recherche ScientifiqueAward: CNRS/IN2P3
- FDFinanciadora de Estudos e Projetos
- MDMinisterio de Ciencia e Innovación
- RSRussian Science Foundation
- RARégion Auvergne-Rhône-Alpes
- CCCAS Center for Excellence in Particle Physics
- ARAustralian Research Data Commons
- NNNational Nuclear Security AdministrationAward: 89233218CNA000001
- SAScience and Technology Facilities CouncilAward: IN2P3
- DEDeutsches Elektronen-Synchrotron
- FRFundamental Research Funds for the Central Universities
- INInstitut National de Physique Nucléaire et de Physique des ParticulesAward: CNRS/IN2P3
- NPNuclear PhysicsAward: 89233218CNA000001
- LALos Alamos National LaboratoryAward: 89233218CNA000001
- HMH2020 Marie Skłodowska-Curie Actions