Theoretical update of the semileptonic branching ratio of B mesons

URN to cite this document:: urn:nbn:de:bvb:355-epub-139758
DOI to cite this document:: 10.5283/epub.13975

Bagan, E. ; Ball, Patricia ; Braun, Vladimir M. ; Gosdzinsky, P.

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Date of publication of this fulltext: 12 Apr 2010 11:50

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Abstract

We reconsider the prediction of the semileptonic branching ratio of B mesons, using the recent calculation [E. Bagan et al., Nucl. Phys. B 432 (1994) 3] of the radiative corrections with account for finite quark masses in nonleptonic decays and taking into account 1/mb2 corrections. For the semileptonic branching ratio we obtain Bsl = (11.8 ± 1.6)% using pole quark masses and Bsl = (11.0 ± 1.9) % ...