QCD Calculations of Radiative B Decays
High Energy Physics - Phenomenology
2009-03-06 v2
Abstract
The current status of B -> Xs gamma decay rate calculations is summarized. Missing ingredients at the NNLO level are listed. The global normalization factor and non-perturbative effects are discussed. Arguments are presented that results for the cutoff-enhanced perturbative corrections have been misused in Ref. [15] by applying them in the region E_gamma \in [1.0, 1.6] GeV, which means that the corresponding numerical effect on BR(B -> Xs gamma, E_gamma > 1.6 GeV) is unreliable.
Cite
@article{arxiv.0808.3134,
title = {QCD Calculations of Radiative B Decays},
author = {Mikolaj Misiak},
journal= {arXiv preprint arXiv:0808.3134},
year = {2009}
}
Comments
6 pages, 4 figures, contribution to the Proceedings of the IXth International Conference on Heavy Quarks and Leptons (HQL 2008), Melbourne, Australia, June 5-9, 2008. Note added and refs updated in v2