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SUMMARY:Lepton Flavor Universality Tests Using B_c+ Decays at LHCb
DTSTART:20260519T090000Z
DTEND:20260519T100000Z
DTSTAMP:20260526T081000Z
UID:indico-event-1685950@indico.cern.ch
CONTACT:ep-seminars.colloquia@cern.ch
DESCRIPTION:Speakers: Emily Jiang (University of Maryland)\n\nLepton flavo
 r 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 co
 llision 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 energ
 y of 13 TeV.\n \nCoffee will be served at 10h30\n \n\nhttps://indico.cer
 n.ch/event/1685950/\n\nZoom: https://cern.zoom.us/j/65798557271?pwd=z1U8yz
 80GWyOyfQvxsJz2Ah1G8yz55.1
LOCATION:222/R-001 (CERN)
URL:https://indico.cern.ch/event/1685950/
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