The B → Kπ puzzle and supersymmetric models

In the light of new experimental results on B -> K pi decays, we study the decay processes B -> K pi in the framework of both R-parity conserving (SUGRA) and R-parity violating supersymmetric models. We find that any possible deviations from the Standard Model indicated by the current data for the branching ratios and the direct CP asymmetries of B -> K pi can be explained in both R-parity conserving SUGRA and R-parity violating SUSY models. However, there is a difference between the predictions of both models to the time-dependent CP asymmetry observable S-KS pi 0 whose current experimental results include large uncertainties. We demonstrate that this difference can be useful for testing both models with more accurate data for S-KS pi 0 and A(CP)(+-) in the near future. (c) 2006 Elsevier B.V. All rights reserved.