NNLO QCD corrections to ΔΓ_s in the B_s-B_s system

2024/03/13 by Gerlach, Marvin, Nierste, Ulrich, Reeck, Pascal +2
#FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph)

paper · doi:10.48550/arxiv.2403.08316

Abstract

This report summarises recent advances made in the calculation of the NNLO QCD corrections to the width difference ΔΓ_s in the B_s-B_s system. The inclusion of the effects due to current-current operators leads to an updated prediction of ΔΓ_s = (0.076± 0.017) ps^-1, which narrows the gap between theory and experiment.

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