Dortmund 2021 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 31: Flavour physics II

T 31.5: Vortrag

Dienstag, 16. März 2021, 17:00–17:15, Tf

Theory status of the lifetime ratio τ (B_s)/τ (B_d) — Daniel King¹, Alexander Lenz², Maria Laura Piscopo², Thomas Rauh³, and •Aleksey Rusov² — ¹IPPP, 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 (B_s)/τ (B_d) 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.