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SUMMARY:Towards a global fit to extract the B -> X_s gamma rate and |Vub|
DTSTART;VALUE=DATE-TIME:20100724T081500Z
DTEND;VALUE=DATE-TIME:20100724T082800Z
DTSTAMP;VALUE=DATE-TIME:20130525T173555Z
UID:indico-contribution-870@cern.ch
DESCRIPTION:Speakers: Mr. BERNLOCHNER\, Florian (Humboldt University of Be
 rlin)\nThe total B -> X_s gamma rate and the CKM-matrix element |Vub| dete
 rmined from semileptonic B-meson decays play an important role in finding 
 indirect evidence of new physics in the flavor sector of the Standard Mode
 l\, complementary to the direct searches at LHC and Tevatron. Their determ
 ination requires the precise knowledge of the parton distribution function
  for the b quark in the B-meson (called the shape function). We implement 
 a new model-independent framework for the shape function with reliable the
 oretical uncertainties based on an expansion in a suitable set of basis fu
 nctions. This is a significant improvement over using model functions. We 
 present the current status of a global fit to BaBar and Belle data to extr
 act the shape function\, the B -> X_s gamma rate and |Vub|.\n\nhttp://indi
 co.cern.ch/contributionDisplay.py?contribId=870&sessionId=53&confId=73513
LOCATION: Salle 242A
URL:http://indico.cern.ch/contributionDisplay.py?contribId=870&sessionId=5
 3&confId=73513
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