Speaker
Christoph Bobeth
(Technical University Munich)
Description
CP asymmetries and branching ratios in QCD and QED penguin dominated charmless B --> M_1 M_2 decays can provide important constrains on non-standard effects. We use current experimental data and discuss the impact of future Belle II measurements of the systems B_(d,s) --> (K pi,K eta', K K, pi pi) and B --> (K rho, K phi, K omega, pi K^*) to explore new physics scenarios mediated by Z-penguin and dipole operators including complementary constraints from b --> s (gamma, gluon, ell^+ ell^-). The large QCD model dependence that arises in the framework of QCD factorisation at sub-leading order from weak annihilation contributions is accounted for by the inclusion of the according phenomenological parameter into the fit in addition to new physics parameters. We discuss also the fit results of the phenomenological parameter in the Standard Model.
Author
Christoph Bobeth
(Technical University Munich)
