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Dortmund 2021 – scientific programme

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T: Fachverband Teilchenphysik

T 31: Flavour physics II

T 31.5: Talk

Tuesday, March 16, 2021, 17:00–17:15, Tf

Theory status of the lifetime ratio τ (Bs)/τ (Bd) — Daniel King1, Alexander Lenz2, Maria Laura Piscopo2, Thomas Rauh3, and •Aleksey Rusov21IPPP, University of Durham, UK — 2Universität Siegen, Germany — 3University of Bern, Switzerland

The precise determination of the lifetime ratios of heavy hadrons plays a crucial role both for the accurate test of the Heavy Quark Expansion in the Standard Model and for the search of New Physics which may be hidden in the invisible decays of heavy hadrons. In this talk, I plan to overview the current theoretical status of the lifetime ratio τ (Bs)/τ (Bd) in the light of recent determination of important Darwin operator contribution to non-leptonic decays of heavy hadrons and of s-quark mass corrections to the corresponding dimension-6 Bag parameters obtained in the framework of HQET Sum Rules.

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