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The inclusive decay b→ccs¯ revisited.

Krinner, Fabian and Lenz, Alexander and Rauh, Thomas (2013) 'The inclusive decay b→ccs¯ revisited.', Nuclear physics B., 876 (1). pp. 31-54.


The inclusive decay rate b →ccs¯ is enhanced considerably due to perturbative QCD corrections. We recalculate the dominant part of the NLO–QCD corrections, because they cannot be reconstructed from the literature and we give the full expressions in this paper. Further we include some previously neglected corrections originating from penguin diagrams. Combined with the impressive progress in the accurate determination of input parameters like charm quark mass, bottom quark mass and CKM parameters, this enables us to make a very precise prediction of the corresponding branching ratioBr(b→ccs) ¯ =(23±2)%. This result is an essential ingredient for a model and even decay channel independent search for new physics effects in B decays.

Item Type:Article
Keywords:B decay, Semileptonic branching ratio, Charm multiplicity, Search for new physics.
Full text:(NA) Not Applicable
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Publisher statement:NOTICE: this is the author’s version of a work that was accepted for publication in Nuclear Physics B. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Nuclear Physics B, 876, 1, 2013, 10.1016/j.nuclphysb.2013.07.028.
Date accepted:No date available
Date deposited:No date available
Date of first online publication:November 2013
Date first made open access:No date available

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