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SUMMARY:Precision Calculation in b—> c decay process
DTSTART:20231023T121500Z
DTEND:20231023T141500Z
DTSTAMP:20260828T023600Z
UID:indico-event-394@indico.hiskp.uni-bonn.de
DESCRIPTION:Speakers: Jing Gao\n\nWe present a novel calculation of radiat
 ive corrections to the Lambda_b to Lambda_c form factors at large recoil u
 p to next-to-leading logarithmic accuracy. Our calculation employs QCD lig
 ht-cone sum rules and incorporates the Lambda_b-baryon distribution amplit
 udes\, ensuring a comprehensive treatment of the scales. With adopting the
  diagrammatic approach\, we establish the factorization formula for the va
 cuum-to-Lambda_b-baryon correlation function at LP and NLL supported by me
 thod of regions. Moreover\, we present global fits of the form factors to 
 our theoretical predictions at large recoil\, simultaneously incorporating
  exclusive mesonic processes B^{*}_q to D^(*)_q and lattice QCD results\, 
 leading to significant advancements in the determination of the lepton-fla
 vor-universality ratios R(Lambda_c). \n\nhttps://indico.hiskp.uni-bonn.de
 /event/394/
URL:https://indico.hiskp.uni-bonn.de/event/394/
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