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

2015/09/14 by Si-Hong Zhou, Yan-Bing Wei, Qin Qin +4
Physics and Astronomy · #Algorithm #Amplitude #Asymmetry #B meson #Black Holes and Theoretical Physics #Branching fraction #Factorization #Hadron #Isospin #Meson #Particle physics #Particle physics theoretical and experimental studies #Physics #Pseudoscalar #Pseudoscalar meson #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Vector meson #hep-ex #hep-ph

paper · pdf · doi:10.1103/physrevd.92.094016

published as Phys.Rev. D92 (2015) no.9, 094016 · 24 pages, 3 figues

arxiv created 2015/09/14 · openalex publication_date 2015/11/09 · arxiv updated 2016/04/13 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

Within the factorization-assisted topological-amplitude approach, we study the two-body charmed B meson decays B_u,d,s\ensuremath→D^(*)M, with M denoting a light pseudoscalar (or vector) meson. The meson decay constants and transition form factors are factorized out from the hadronic matrix element of topological diagrams. Therefore, the effect of SU(3) symmetry breaking is retained, which is different from the conventional topological diagram approach. The number of free nonperturbative parameters to be fitted from experimental data is also much less. Only four universal nonperturbative parameters \ensuremathχ^C, \ensuremathφ^C, \ensuremathχ^E and \ensuremathφ^E are introduced to describe the contribution of the color-suppressed tree and W-exchanged diagrams for all the decay channels. With the fitted parameters from 31 decay modes induced by b\ensuremath→c transition, we then predict the branching fractions of 120 decay modes induced by both b\ensuremath→c and b\ensuremath→u transitions. Our results are well consistent with the measured data or to be tested in the LHCb and Belle-II experiments in the future. Besides, the SU(3) symmetry breaking, isospin violation and CP asymmetry are also investigated.

Citations

• DeterminingγusingB±→DK±with multibodyDdecays
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• Big-Bang Nucleosynthesis