Analysis of B < inf > d < /inf > < sup > 0 < /sup > → φ K* < sup > 0 < /sup > decay mode with supersymmetry

Abstract

Motivated by the recent measurement of a low longitudinal polarization fraction in the decay mode Bd0 → φ K*0, which appears not to be in agreement with the standard model expectation, we analyze this mode in the minimal supersymmetric standard model with the mass insertion approximation. Within the standard model, with the factorization approximation, the longitudinal polarization is expected to be fL ∼ 1-O(1/mb2). We find that this anomaly can be explained in the minimal supersymmetric standard model with either the LR or the RL mass insertion approximation. © Springer-Verlag/Societá Italiana di Fisica 2005.