Aug 4 – 7, 2020
online
Asia/Tokyo timezone

Neutral $B$ and $B_s$ mixing matrix elements using NRQCD and the MILC HISQ ensembles

Aug 5, 2020, 2:40 PM
20m
online

online

Weak Decays and Matrix Elements Weak Decays and Matrix Elements

Speaker

Matthew Wingate (University of Cambridge)

Description

In this talk I will briefly review our recent lattice calculations for matrix elements contributing to the mass and width differences of neutral $B$ mesons [arXiv:1907.01025, arXiv:1910.00970]. The calculations were done using the MILC ensembles generated with 4-flavours of sea quarks utilizing the highly improved staggered quark action. An improved nonrelativistic quark action was used for the bottom quark. Consequences of these calculations include determinations of the CKM matrix elements $|V_{td}|$ and $|V_{ts}|$, predictions for the rare branching fractions $B_{d,s} \to \mu^+ \mu^-$, and an improved Standard Model determinations for $\Delta \Gamma_s$.

Primary author

Matthew Wingate (University of Cambridge)

Co-authors

Presentation materials