|Title: ||Inclusive B decays from resummed perturbation theory.|
|Authors: ||Gardi, Einan|
|Issue Date: ||Mar-2007|
|Publisher: ||High Energy Physics, Cavendish Laboratory, University of Cambridge|
|Series/Report no.: ||Cavendish-HEP-07-04|
|Abstract: ||I review the recent progress in computing inclusive B decay widths and spectra and its implications
on the interpretation of measurements from the B factories. I discuss the inclusive charmless
semileptonic decay, ¯B ! Xul¯ , which provides the most robust determination of the CKM parameter
|Vub|, and the rare radiative decay, ¯B ! Xs
, which constrains flavor violation beyond the
Standard Model. I demonstrate that precise predictions for the experimentally–relevant branching
fractions can be derived from resummed perturbation theory and explain the way in which the
resummation further provides guidance in parametrizing non-perturbative Fermi–motion effects.
Finally I address the comparison between theory and data and discuss future prospects.|
|Appears in Collections:||Scholarly works - High Energy Physics|
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