Electroweak Corrections to $B_{s,d} \to \ell^+ \ell^-$
High Energy Physics - Phenomenology
2014-02-26 v2 High Energy Physics - Experiment
Abstract
We calculate the full two-loop electroweak matching corrections to the operator governing the decay B_q --> l^+ l^- in the Standard Model. Their inclusion removes an electroweak scheme and scale uncertainty of about 7% of the branching ratio. Using different renormalization schemes of the involved electroweak parameters, we estimate residual perturbative electroweak and QED uncertainties to be less than 1% at the level of the branching ratio.
Keywords
Cite
@article{arxiv.1311.1348,
title = {Electroweak Corrections to $B_{s,d} \to \ell^+ \ell^-$},
author = {Christoph Bobeth and Martin Gorbahn and Emmanuel Stamou},
journal= {arXiv preprint arXiv:1311.1348},
year = {2014}
}
Comments
16 pages, 6 figures, supplementary Mathematica file "c10.m" with analytical results; v2: references updated