Precision determination of the CKM element Vcb
High Energy Physics - Phenomenology
2015-03-05 v2 High Energy Physics - Experiment
Abstract
We extract the magnitude of the CKM matrix element Vcb and the most relevant parameters of the Heavy Quark Expansion from data of inclusive semileptonic B decays. Our calculation includes the recently computed O(alphas Lambda^2/mb^2) corrections and a careful estimate of the residual theoretical uncertainty. Using a recent determination of the charm quark mass, we obtain |Vcb| = (42.21+-0.78)x10-3 and mb_kin(1GeV)=(4.553+-0.020)GeV.
Keywords
Cite
@article{arxiv.1411.6560,
title = {Precision determination of the CKM element Vcb},
author = {Andrea Alberti and Paolo Gambino and Kristopher J. Healey and Soumitra Nandi},
journal= {arXiv preprint arXiv:1411.6560},
year = {2015}
}
Comments
5 pages, v2: minor changes, matches journal version