Analysis of charmless two-body B decays in factorization-assisted topological-amplitude approach

Si-Hong Zhou; Qi-An Zhang; Wei-Ran Lyu; Cai-Dian Lü

doi:10.1140/epjc/s10052-017-4685-0

EPJ

Analysis of charmless two-body B decays in factorization-assisted topological-amplitude approach

Si-Hong Zhou¹^,2^*, Qi-An Zhang¹^,2, Wei-Ran Lyu³ and Cai-Dian Lü¹^,2

¹ Institute of High Energy Physics, YuQuanLu 19B, Beijing, 100049, China
² School of Physics, University of Chinese Academy of Sciences, YuQuanLu 19A, Beijing, 100049, China
³ Physics Department, Renmin University of China, ZhongGuanCun St. 59, Beijing, 100872, China

Received: 20 October 2016
Accepted: 8 February 2017
Published online: 23 February 2017

Abstract

We analyze charmless two-body non-leptonic B decays $B \rightarrow PP, PV$ under the framework of a factorization-assisted topological-amplitude approach, where P(V) denotes a light pseudoscalar (vector) meson. Compared with the conventional flavor diagram approach, we consider the flavor SU(3) breaking effect assisted by a factorization hypothesis for topological diagram amplitudes of different decay modes, factorizing out the corresponding decay constants and form factors. The non-perturbative parameters of topology diagram magnitudes $\chi$ and the strong phase $\phi$ are universal; they can be extracted by $\chi ^2$ fit from current abundant experimental data of charmless Bdecays. The number of free parameters and the $\chi ^2$ per degree of freedom are both reduced compared with previous analyses. With these best fitted parameters, we predict branching fractions and CP asymmetry parameters of nearly 100 $B_{u,d}$ and $$B_s$$

decay modes. The long-standing $\pi \pi$ and $\pi K$ -CP puzzles are solved simultaneously.

Student Conference in Optics and Photonics 2024
October 2-4, 2024
Barcelona, Spain

EPJ

Analysis of charmless two-body B decays in factorization-assisted topological-amplitude approach

Conference announcements