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A novel measurement of Bs0B^0_s and Dsβˆ’D^-_s lifetimes using semileptonic decays at LHCb

Abstract

I report new, world-leading LHCb results on heavy meson lifetimes. We use a novel approach that suppresses the shortcomings typically associated with reconstruction of semileptonic decays, allowing for precise measurements of lifetimes and other properties in collider experiments. We achieve a 15% and a 2Γ—2\times improvement over current best determinations of the flavor-specific Bs0B^0_s lifetime and Dsβˆ’D^-_s lifetime, respectively.Comment: 12 pages, 6 figures. Talk presented at the APS Division of Particles and Fields Meeting (DPF 2017), July 31-August 4, 2017, Fermilab. C17073

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