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

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

High Energy Physics - Phenomenology 2024-03-14 v1

Authors: Marvin Gerlach , Ulrich Nierste , Pascal Reeck , Vladyslav Shtabovenko , Matthias Steinhauser

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.

Keywords

NNLO QCD corrections width difference ΔΓs Bs-B̄s system current-current operators heavy quark expansion

Cite

@article{arxiv.2403.08316,
  title  = {NNLO QCD corrections to $\Delta \Gamma_s$ in the $B_s-\overline{B}_s$ system},
  author = {Marvin Gerlach and Ulrich Nierste and Pascal Reeck and Vladyslav Shtabovenko and Matthias Steinhauser},
  journal= {arXiv preprint arXiv:2403.08316},
  year   = {2024}
}

Comments

Presented at the 12th Workshop on the CKM Unitarity Triangle, 18-22 September 2023, Santiago de Compostela

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

Abstract

Keywords

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