Ponente
Prof.
Hai-Yang Cheng
(Academia Sinica)
Descripción
Branching fractions and CP-violating asymmetries of charmless three-body decays of B_{u,d} and B_s mesons are studied using a simple model based on the factorization approach. We consider both resonant and nonresonant contributions. Dominant nonresonant contributions to tree-dominated three-body decays can be evaluated using heavy meson chiral perturbation theory valid in the soft meson limit. For penguin-dominated decays, nonresonant signals come mainly from the penguin amplitude governed by the matrix elements of scalar densities. Inclusive and regional CP asymmetries are predicted and confronted with the LHCb data. For B_s decays, several model-independent U-spin symmetry relations for CP violation are derived.
Autor primario
Prof.
Hai-Yang Cheng
(Academia Sinica)
Coautor
Prof.
Chun-Khiang Chua
(Chung Yuan Christian University)
