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arXiv · 1311.1348

Electroweak Corrections to $B_{s,d} \to \ell^+ \ell^-$

Christoph Bobeth·Martin Gorbahn·Emmanuel Stamou
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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.

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Christoph Bobeth, Martin Gorbahn, Emmanuel Stamou. 2013-11-06. Electroweak Corrections to $B_{s,d} \to \ell^+ \ell^-$. https://doi.org/10.1103/physrevd.89.034023

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