A simple relation for B_s-mixing

Details A simple relation for B_s-mixing A simple relation for B_s-mixing

2011-06-16

arxiv.org/abs/1106.3200v2

Phys.Rev.D84:031501,2011

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, 1 figure, reference added, improved discussion

Scientific paper

10.1103/PhysRevD.84.031501

We reinvestigate a simple relation between the semileptonic CP asymmetry a_{sl}^s, the decay rate difference \Delta \Gamma_s, the mass difference \Delta M_s and S_{\psi \phi} extracted from the angular analysis of the decay B_s \to \psi \phi, which is regularly used in the literature. We find that this relation is not suited to eliminate the theory prediction for \Gamma_{12}, it can, however be used to determine the size of the penguin contributions to the decay B_s \to \psi \phi. Moreover we comment on the current precision of the theory prediction for \Gamma_{12}.

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