Evidence for CP violation in B + → K ∗ (892) + π 0 from a Dalitz plot analysis of B decays

We report a Dalitz plot analysis of charmless hadronic decays of charged B mesons to the final state K 0 S π + π 0 using the full B A B AR dataset of 470 . 9 ± 2 . 8 million BB events collected at the Υ (4 S ) resonance. We measure the overall branching fraction and CP asymmetry to be B and 05 ± 03 . 02 − 0 . 03 , where the uncertainties are statistical, systematic, and due to the signal model, respectively. This is the first measurement of the branching fraction for B + → K 0 π + π 0 . We find first evidence of a CP asymmetry in B + → K ∗ (892) + π 0 decays: A CP The significance of this asymmetry, including systematic and model uncertainties, is 3 . 4 standard deviations. We also measure the branching fractions and CP asymmetries for three other intermediate decay modes.