Charmless B→PV,VV decays and new physics effects in the minimal supergravity model -: art. no. 094206

By employing the QCD factorization approach, we calculate the new physics contributions to the branching radios of the two-body charmless B -> PV and B -> VV decays in the framework of the minimal supergravity (mSUGRA) model. We choose three typical sets of the mSUGRA input parameters in which the Wilson coefficient C-7 gamma(m(b)) can be either standard model (SM)-like (the case A and C) or has a flipped sign (the case B). We found numerically that (a) the SUSY contributions are always very small for both case A and C; (b) for those tree-dominated decays, the SUSY contributions in case B are also very small; (c) for those QCD penguin-dominated decay modes, the SUSY contributions in case B can be significant, and can provide an enhancement about 30%similar to 260% to the branching ratios of B -> K-*(pi,phi,rho) and K phi decays, but a reduction about 30%similar to 80% to B -> K(rho,omega) decays; and (d) the large SUSY contributions in the case B may be masked by the large theoretical errors dominated by the uncertainty from our ignorance of calculating the annihilation contributions in the QCD factorization approach.