2-9 July 2014
Valencia, Spain
Europe/Madrid timezone

Branching fractions and CP violation in charmless 3-body decays of B mesons

4 Jul 2014, 13:15
Sala 8+9 ()

Sala 8+9

Oral presentation Flavour Physics Flavour Physics


Prof. Hai-Yang Cheng (Academia Sinica)


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.

Primary author

Prof. Hai-Yang Cheng (Academia Sinica)


Prof. Chun-Khiang Chua (Chung Yuan Christian University)

Presentation Materials


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