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New Physics contribution to $B \to K \pi$ decays in SCET · Around

2009

New Physics contribution to $B \to K \pi$ decays in SCET

Huitu, K., Khalil, S.

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We analyze the $5\sigma$ difference between the CP asymmetries of the $B^0 \to K^+ \pi^-$ and $B^+ \to K^+ \pi^0$ decays within the Soft Collinear Effective Theory.

We find that in the Standard Model, such a big difference cannot be achieved.
We classify then the requirements for the possible New Physics models, which can be responsible for the experimental results.
As an example of a New Physics model we study minimal supersymmetric models, and find that the measured asymmetry can be obtained with non-minimal flavor violation.

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