Testing the Standard Model and searching for New Physics with $B_d \to ππ$ and $B_s \to K K$ decays

M. Ciuchini; E. Franco; S. Mishima; L. Silvestrini

doi:10.1007/jhep10(2012)029

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arXiv · 1205.4948

Testing the Standard Model and searching for New Physics with $B_d \to ππ$ and $B_s \to K K$ decays

M. Ciuchini·E. Franco·S. Mishima·L. Silvestrini

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Abstract

We propose to perform a combined analysis of $B \to ππ$ and $B_s \to K^+ K^-$ modes, in the framework of a global CKM fit. The method optimizes the constraining power of these decays and allows to derive constraints on NP contributions to penguin amplitudes or on the $B_s$ mixing phase. We illustrate these capabilities with a simplified analysis using the recent measurements by the LHCb Collaboration, neglecting correlations with other SM observables.

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M. Ciuchini, E. Franco, S. Mishima, L. Silvestrini. 2012-10-15. Testing the Standard Model and searching for New Physics with $B_d \to ππ$ and $B_s \to K K$ decays. https://doi.org/10.1007/jhep10(2012)029

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