Towards the NNLL precision in $\bar B \to X_s \gamma$
High Energy Physics - Phenomenology
2011-01-05 v1
Abstract
The present NLL prediction for the decay rate of the rare inclusive process has a large uncertainty due to the charm mass renormalization scheme ambiguity. We estimate that this uncertainty will be reduced by a factor of 2 at the NNLL level. This is a strong motivation for the on-going NNLL calculation, which will thus significantly increase the sensitivity of the observable to possible new degrees of freedom beyond the SM. We also give a brief status report of the NNLL calculation.
Cite
@article{arxiv.hep-ph/0512097,
title = {Towards the NNLL precision in $\bar B \to X_s \gamma$},
author = {H. Asatrian and A. Hovhannisyan and V. Poghosyan and C. Greub and T. Hurth},
journal= {arXiv preprint arXiv:hep-ph/0512097},
year = {2011}
}
Comments
5 pages, 2 figures, contribution to the proceedings of EPS-HEP 2005