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Decay Mode with Supersymmetry

Motivated by the recent measurement of low longitudinal polarization fraction in the decay mode B0 d → φK∗0, which appears not to be in agreement with the standard model expectation, we analyze this mode in the minimal supersymmetric standard model with mass insertion approximation. Within the standard model, with factorization approximation, the longitudinal polarization is expected to be fL ∼ 1 − O(1/mb ). We find that this anomaly can be explained in the minimal supersymmetric standard model with either LR or RL mass insertion approximation.