Lifetime difference in B_s mixing: Standard Model and beyond

2009/09/26 by Andriy Badin, Fabrizio Gabbiani, Badin, Andriy +3
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #hep-ph

paper · pdf · doi:10.48550/arxiv.0909.4897

7 pages, 5 figures. To be published in the proceedings of DPF-2009, Detroit, MI, July 2009, eConf C090726. Presented by Andriy Badin at APS DPF 2009 meeting

arxiv created 2009/09/26 · arxiv updated 2009/12/01

Abstract

We present a calculation of 1/m_b² corrections to the lifetime differences of B_s mesons in the heavy-quark expansion. We find that they are small to significantly affect ΔΓ (B_s) and present the result for lifetime difference including non-perturbative 1/m_b and 1/m_b² corrections. We also analyze the generic ΔB = 1 New Physics contributions to the lifetime difference of B_s mesons and provide several examples

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