New physics contribution to $B\to K\pi$ decays in soft collinear effective theory

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 nonminimal flavor violation.