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arXiv · 2403.08316

NNLO QCD corrections to $\Delta \Gamma_s$ in the $B_s-\overline{B}_s$ system

Marvin Gerlach·Ulrich Nierste·Pascal Reeck·Vladyslav Shtabovenko·Matthias Steinhauser
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Abstract

This report summarises recent advances made in the calculation of the NNLO QCD corrections to the width difference $\Delta\Gamma_s$ in the $B_s-\overline{B}_s$ system. The inclusion of the effects due to current-current operators leads to an updated prediction of $\Delta\Gamma_s = (0.076\pm 0.017)\,\text{ps}^{-1}$, which narrows the gap between theory and experiment.

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Marvin Gerlach, Ulrich Nierste, Pascal Reeck, Vladyslav Shtabovenko, Matthias Steinhauser. 2024-03-13. NNLO QCD corrections to $\Delta \Gamma_s$ in the $B_s-\overline{B}_s$ system. https://arxiv.org/abs/2403.08316

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