The inclusive decay b→ccs¯ revisited

Krinner, Fabian; Lenz, Alexander; Rauh, Thomas

doi:10.1016/j.nuclphysb.2013.07.028

The inclusive decay b→ccs¯ revisited

Krinner, Fabian; Lenz, Alexander; Rauh, Thomas

Authors

Fabian Krinner

Alexander Lenz

Thomas Rauh

Abstract

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.

Citation

Krinner, F., Lenz, A., & Rauh, T. (2013). The inclusive decay b→ccs¯ revisited. Nuclear Physics B, 876(1), 31-54. https://doi.org/10.1016/j.nuclphysb.2013.07.028

Journal Article Type	Article
Publication Date	Nov 1, 2013
Deposit Date	Jun 13, 2014
Publicly Available Date	Jun 17, 2014
Journal	Nuclear Physics B
Print ISSN	0550-3213
Publisher	Elsevier
Peer Reviewed	Peer Reviewed
Volume	876
Issue	1
Pages	31-54
DOI	https://doi.org/10.1016/j.nuclphysb.2013.07.028
Keywords	B decay, Semileptonic branching ratio, Charm multiplicity, Search for new physics.