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SUMMARY:Rare beauty decays as precision probes of new physics - Dr Harry C
 liff\, University of Cambridge
DTSTART:20260319T110000Z
DTEND:20260319T120000Z
UID:TALK245455@talks.cam.ac.uk
CONTACT:Matthew Kenzie
DESCRIPTION:Rare decays of beauty hadrons provide some of the most sensiti
 ve probes of physics beyond the Standard Model\, offering indirect access 
 to energy scales orders of magnitude above the direct reach of the Large H
 adron Collider. These processes occur via flavour-changing neutral current
 s\, in which a beauty quark transforms into another down-type quark and tw
 o charged leptons. Forbidden at tree level in the Standard Model and there
 fore highly suppressed\, such decays are particularly sensitive to contrib
 utions from heavy new particles.\n\nOver the past decade and a half\, the 
 LHCb experiment has studied these processes with steadily increasing preci
 sion. Intriguingly\, several measurements - particularly of branching frac
 tions and angular observables - have shown tensions with Standard Model pr
 edictions. These anomalies may provide hints of new fundamental physics\, 
 although their interpretation is complicated by theoretical uncertainties 
 associated with hadronic effects.\n\nIn this talk I will review recent pro
 gress in the study of rare beauty decays at LHCb and discuss how the rapid
 ly growing dataset from the upgraded detector is transforming these modes 
 into precision probes of new physics. I will highlight new measurements th
 at can clarify the origin of the current anomalies and outline future oppo
 rtunities for discovering physics beyond the Standard Model.
LOCATION:Lecture Theatre\, Level 2\, Ray Dolby Centre\, Cavendish Laborato
 ry\, JJ Thomson Avenue\, CB3 0US
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