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SUMMARY:Studying unique beauty at LHCb
DTSTART:20250730T120000Z
DTEND:20250730T130000Z
DTSTAMP:20260719T064500Z
UID:indico-event-3909@indico.e5.physik.tu-dortmund.de
CONTACT:maik.becker@tu-dortmund.de\;serena.maccolini@cern.ch
DESCRIPTION:Speakers: Mick Mulder (Universität Groningen)\n\nAt the Large
  Hadron Collider\, proton-proton collisions occur an incredible 30 million
  times per second\, recreating conditions similar to those just after the 
 Big Bang. This allows experiments like LHCb to study fundamental particles
  with exceptional precision. Being a forward-facing detector\, LHCb has a 
 unique perspective on the LHC collisions\, covering a region is enriched i
 n beauty quarks.\nIn this talk\, I will cover recent and ongoing branching
  fraction measurements at LHCb\, which use the beauty hadrons which are un
 iquely available in these amounts at the LHC: Bs and Bc mesons and Lb bary
 ons. These are the rare decays Bs→μ⁺μ⁻ and Bd→μ⁺μ⁻\, lepto
 n flavour violation and universality tests using Λb→Λeμ and Λb→Λe
 e decays\, and also more common but experimentally challenging modes like 
 Bc→τν and Bu→τν. With these measurements\, LHCb contributes unique
 ly to solving the flavour puzzle: the unexplained structure of matter in t
 he Standard Model.\nPrecisely measuring these branching fractions requires
  precise determinations of their production rates. Such determinations are
  non-trivial at hadron colliders\, and I will highlight the interplay betw
 een these production rate measurements\, such as the Bs vs. Bd production 
 rate fs/fd\, the branching fraction Λb→J/ψΛ\, and the possibilities t
 o improve the estimates of Bc production rates.\nWith LHCb Upgrade I now i
 n operation\, and data being collected at unprecedented rates\, we are ent
 ering an era of precision flavour physics even for these challenging decay
 s. I will discuss how this new data will push back the frontier of knowled
 ge on beauty hadrons and their role in probing New Physics.\n\nhttps://ind
 ico.e5.physik.tu-dortmund.de/event/3909/
URL:https://indico.e5.physik.tu-dortmund.de/event/3909/
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