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Implications of the measurement of the B^0_s-\bar B^0_s mass difference

Zoltan Ligeti·Michele Papucci·Gilad Perez
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Abstract

We analyze the significant new model independent constraints on extensions of the standard model (SM) that follow from the recent measurements of the B^0_s-\bar B^0_s mass difference. The time-dependent CP asymmetry in B_s -> ψϕ, S_{ψϕ}, will be measured with good precision in the first year of LHC data taking, which will further constrain the parameter space of many extensions of the SM, in particular, next-to-minimal flavor violation. The CP asymmetry in semileptonic B_s decay, A_{SL}^s, is also important to constrain these frameworks, and could give further clues to our understanding the flavor sector in the LHC era. We point out a strong correlation between S_{ψϕ} and A_{SL}^s in a very broad class of new physics models.

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Zoltan Ligeti, Michele Papucci, Gilad Perez. 2006-06-22. Implications of the measurement of the B^0_s-\bar B^0_s mass difference. https://doi.org/10.1103/physrevlett.97.101801

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