Speaker
Prof.
Alberto Correa Dos Reis
(CBPF - Brazilian Center for Physics Research (BR))
Description
Charmless three-body decays of $B^+$ mesons are an excellent laboratory for direct CP violation (CPV) studies. While in two-body decays one measures a single number - the CP asymmetry in the partial decay rates -, in three-body decays the distribution of CP asymmetries across the two-dimensional phase space brings additional information on the underlying mechanisms.
Recently the LHCb collaboration performed a study of CP
asymmetries in the Dalitz plot of the decays $B^+ \to \pi^+\pi^-\pi^+$, $B^+ \to K^+\pi^-\pi^+$, $B^+ \to K^+\pi^-K^+$, and $B^+ \to K^+K^-K^+$. CP asymmetries as large as 80% were found in regions of the Dalitz plots. The distribution of the CP asymmetry across the phase space exhibit a complex pattern, which may be a consequence of the interplay between the weak and strong phases. In this talk these results will be presented and a possible interpretation will be discussed.
Author
Prof.
Alberto Correa Dos Reis
(CBPF - Brazilian Center for Physics Research (BR))
