|Phenomenological discussion of B->PV decays in QCD improved factorization approach|
|R. Aleksan, P.-F. Giraud, V. Morénas, O. Pène, A. S. Safir|
Trying a global fit of the experimental branching ratios and CP-asymmetries of the charmless B->PV decays according to QCD factorization, we find it impossible to reach a satisfactory agreement, the confidence level of the best fit is smaller than .1%. This failure reflects the difficulty to accommodate several large experimental branching ratios of the strange channels. Furthermore, experiment was not able to exclude a large direct CP asymmetry in B0bar->rho+pi-, which is predicted very small by QCD factorization. Proposing a fit with QCD factorization complemented by a charming-penguin inspired model we reach a best fit which is not excluded by experiment (CL of about 8%) but is not fully convincing. These negative results must be tempered by the remark that some of the experimental data user are recent and might still evolve significantly.