Higher Order Power Corrections in Inclusive B Decays
High Energy Physics - Phenomenology
2010-12-03 v1
Abstract
We discuss order 1/m_b^4 and 1/m_b^5 corrections in inclusive semileptonic decay of a meson. We identify relevant hadronic matrix elements of dimension seven and eight and estimate them using the ground-state saturation approximation. Within this approach the effects on the integrated rate and on kinematic moments are estimated. The overall relative shift in V_{cb} turns out about +0.4% as applied to the existing fits. Similar estimates are presented for B -> X_s+\gamma decays.
Cite
@article{arxiv.1009.4622,
title = {Higher Order Power Corrections in Inclusive B Decays},
author = {Thomas Mannel and Sascha Turczyk and Nikolai Uraltsev},
journal= {arXiv preprint arXiv:1009.4622},
year = {2010}
}
Comments
30 pages, 16 figures