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SUMMARY:New results on theoretically clean observables in rare B-meson dec
 ays from LHCb
DTSTART:20210406T130000Z
DTEND:20210406T150000Z
DTSTAMP:20260914T203300Z
UID:indico-event-26424@agenda.infn.it
DESCRIPTION:Speakers: Matteo Rama (PI)\n\nAbstract: Over the past decade\,
  measurements involving the flavour changing neutral current transition b-
 >s l+l- (l=e\,mu) have shown a pattern of tensions with the Standard Model
  (SM) predictions. Measurements of theoretically clean observables in proc
 esses that are suppressed in the SM are powerful probes for the existence 
 of new interactions that could alter their values. In this seminar we pres
 ent new results on two key measurements\, the branching fraction and lifet
 ime of B(s)->mumu decays and the test of lepton universality with B+->K+ l
 +l- decays\, using the complete dataset collected by the LHCb experiment. 
 Evidence of the breaking of lepton universality with a statistical signifi
 cance of 3.1 standard deviations is found. Perspectives of the measurement
 s in the upgrade phase starting next year and in the proposed upgrade-II p
 hase are discussed.\n\nIl seminario si terra' via Zoom al seguent indirizz
 o:\nhttps://zoom.us/j/94098648321?pwd=N3VZdFFCZEVXOFJnZDJBMzR3VklpUT09\nID
  riunione: 940 9864 8321\n\n\n \n\nhttps://agenda.infn.it/event/26424/
URL:https://agenda.infn.it/event/26424/
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