oai:cds.cern.ch:3025690

Video URL

https://videos.cern.ch/record/3025690

Lepton Flavor Universality Tests Using B_c+ Decays at LHCb

(2026). Lepton Flavor Universality Tests Using B_c+ Decays at LHCb. SciVideos. https://videos.cern.ch/record/3025690

Lepton Flavor Universality Tests Using B_c+ Decays at LHCb. SciVideos, May. 19, 2026, https://videos.cern.ch/record/3025690 

          @misc{ scivideos_oai:cds.cern.ch:3025690,
            doi = {},
            url = {https://videos.cern.ch/record/3025690},
            author = {},
            keywords = {},
            language = {en},
            title = {Lepton Flavor Universality Tests Using B_c+ Decays at LHCb},
            publisher = {},
            year = {2026},
            month = {may},
            note = {oai:cds.cern.ch:3025690 see, \url{https://scivideos.org/cern-cds/3025690}}
          }
Jiang, Emily
Talk numberoai:cds.cern.ch:3025690
Source RepositoryCERN-CDS
Source Eventhttps://indico.cern.ch/event/1685950/
Collection
Subject

Abstract

Lepton flavor universality ratios have been the source of much interest in the search for beyond the Standard Model physics, with longstanding anomalies in the R(D(*)) measurements at 3.8 standard deviations above the Standard Model value. A measurement of the ratio of semileptonic branching fractions R(J/psi), defined as R}(J/psi) = B(B_c^+ \to J/psi tau^+ nu_{tau})/B(B_c^+ \to J/\psi mu^+ nu_{mu}), is reported using a sample of proton-proton collision data corresponding to an integrated luminosity of 5.4fb^{-1} (Run-2) recorded by the LHCb experiment in 2016--2018 at a center-of-mass energy of 13 TeV.

 

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