B_{s,d} -> l+ l- in the Standard Model with Reduced Theoretical Uncertainty
High Energy Physics - Phenomenology
2014-03-18 v3 High Energy Physics - Experiment
Abstract
We combine our new results for the O(alpha_em) and O(alpha_s^2) corrections to B_{s,d} -> l^+ l^-, and present updated branching ratio predictions for these decays in the standard model. Inclusion of the new corrections removes major theoretical uncertainties of perturbative origin that have just begun to dominate over the parametric ones. For the recently observed muonic decay of the B_s meson, our calculation gives BR(B_s -> mu^+ mu^-) = (3.65 +_ 0.23) * 10^(-9).
Keywords
Cite
@article{arxiv.1311.0903,
title = {B_{s,d} -> l+ l- in the Standard Model with Reduced Theoretical Uncertainty},
author = {Christoph Bobeth and Martin Gorbahn and Thomas Hermann and Mikolaj Misiak and Emmanuel Stamou and Matthias Steinhauser},
journal= {arXiv preprint arXiv:1311.0903},
year = {2014}
}
Comments
4 pages, 1 figure; v3: matches the published version in Phys. Rev. Lett. 112, 101801 (2014); title and ordering of references modified; results unchanged