| Article | |
| Report number | arXiv:2111.05338 ; CERN-TH-2021-184 ; LA-UR-21-30608 ; ZU-TH 54/21 |
| Title | Testing Lepton Flavor Universality with Pion, Kaon, Tau, and Beta Decays |
| Author(s) | Bryman, Douglas (British Columbia U. ; TRIUMF) ; Cirigliano, Vincenzo (Los Alamos Natl. Lab., Theor. Div.) ; Crivellin, Andreas (Zurich U. ; PSI, Villigen ; CERN) ; Inguglia, Gianluca (Vienna, OAW) |
| Publication | 2022-06-15 |
| Imprint | 2021-11-09 |
| Number of pages | 30 |
| In: | Ann. Rev. Nucl. Part. Sci. 72 (2022) 69-91 |
| DOI | 10.1146/annurev-nucl-110121-051223 (publication) |
| Subject category | Nuclear Physics - Theory ; Nuclear Physics - Experiment ; Particle Physics - Lattice ; Particle Physics - Experiment ; Particle Physics - Phenomenology |
| Abstract | We present an overview of searches fo violation of lepton flavor universality with focus on low energy precision probes using pions, kaons, tau leptons, and nuclear beta decays. The current experimental results are reviewed, the theoretical status within the context of the Standard Model is summarized, and future prospects (both experimental and theoretical) are discussed. We review the implications of these measurements for physics beyond the Standard Model by performing a global model-independent fit to modified $W$ couplings to leptons and four-fermion operators. We also discuss new physics in the context of simplified models and review Standard Model extensions with focus on those which can explain a possible deviation from unitarity of the Cabibbo-Kobayashi-Maskawa quark mixing matrix. |
| Copyright/License | preprint: (License: CC BY 4.0) publication: © 2022-2025 Annual Reviews (License: CC BY 4.0) |
Corresponding record in: Inspire
Element opprettet 2021-11-12, sist endret 2023-08-10
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