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. |
