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- W2013721856 abstract "The D0 collaboration has recently announced evidence for a dimuon CP asymmetry in B d,s decays of order one percent. If confirmed, this asymmetry requires new physics. We argue that for minimally flavor violating (MFV) new physics, and at low tan β = v u /v d , there are only two four-quark operators (Q 2,3) that can provide the required CP violating effect. The scale of such new physics must lie below 260 GeV $ sqrt {{tan beta }} $ . The effect is universal in the B s and B d systems, leading to S ψ K ∼ sin 2β − 0.15 and S ψϕ ∼ 0.25. The effects on ϵ K and on electric dipole moments are negligible. The most plausible mechanism is tree-level scalar exchange. MFV supersymmetry with low tan β will be excluded. Finally, we explain how a pattern of deviations from the Standard Model predictions for S ψϕ , S ψ K and ϵ K can be used to test MFV and, if MFV holds, to probe its structure in detail." @default.
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- W2013721856 date "2010-09-01" @default.
- W2013721856 modified "2023-10-14" @default.
- W2013721856 title "Implications of large dimuon CP asymmetry in B d,s decays on minimal flavor violation with low tan β" @default.
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- W2013721856 doi "https://doi.org/10.1007/jhep09(2010)035" @default.
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