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arXiv · 1311.5342

$B_s \to \mu^+ \mu^-$ in the SM and $\bar{B}\to X_s \gamma$ in the 2HDM at NNLO in QCD

Thomas Hermann
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Abstract

In this contribution the QCD next-to-next-to-leading order (NNLO) matching coefficients to the branching ratio $B_s \to \mu^+ \mu^-$ in the Standard Model (SM) and to $\bar{B}\to X_s \gamma$ in the Two Higgs Doublet Model (2HDM) are discussed. In both cases a three-loop matching between the full and effective theory was performed, which leads to a significant reduction of the scale uncertainty.

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Thomas Hermann. 2013-11-21. $B_s \to \mu^+ \mu^-$ in the SM and $\bar{B}\to X_s \gamma$ in the 2HDM at NNLO in QCD. https://arxiv.org/abs/1311.5342

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