Testing new indirect CP violation

Yuval Grossman, Yosef Nir, Gilad Perez

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71 Scopus citations


If new CP violating physics contributes to neutral meson mixing, but its contribution to CP violation in decay amplitudes is negligible, then there is a model independent relation between four (generally independent) observables related to the mixing: the mass splitting (x), the width splitting (y), the CP violation in mixing (1-|q/p|), and the CP violation in the interference of decays with and without mixing (). For the four neutral meson systems, this relation can be written in a simple approximate form: ytan x(1-|q/p|). In the K system, all four observables have been measured and obey the relation to excellent accuracy. For the Bs and D systems, new predictions are provided. The success or failure of these relations will probe the physics that is responsible for the CP violation.

Original languageEnglish
Article number071602
JournalPhysical Review Letters
Issue number7
StatePublished - 14 Aug 2009
Externally publishedYes


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