Study of the B_c→B_sπ decay with the perturbative QCD approach  

作　　者：SUN JunFeng YANG YueLing LU GongRu 

机构地区：[1]Institute of Particle and Nuclear Physics, Henan Normal University

出　　处：《Science China(Physics,Mechanics & Astronomy)》2014年第10期1891-1897,共7页中国科学：物理学、力学、天文学（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.11147008,U1232101 and 11275057)

摘　　要：The Bc → Bsπ decay is studied with the perturbative QCD approach. Three types of wave functions for Bs meson are considered. The transition form factor F0Bc → Bsπ （0） and the branching ratio IBr（Bc → Bsπ） are sensitive to the model of the Bs meson wave functions. With appropriate inputs, our estimate on 23r（Bc → Bsπ） is comparable with the recent LHCb measurement. A clear signal of Bc → Bsπ decay should be easily observed at the Large Hadron Collider.The Bc→Bsπ decay is studied with the perturbative QCD approach. Three types of wave functions for Bsmeson are considered.The transition form factor FBc→Bs0(0) and the branching ratio Br(Bc→Bsπ)aresensitivetothemodelofthe Bsmeson wave functions.With appropriate inputs, our estimate on Br(Bc→Bsπ) is comparable with the recent LHCb measurement. A clear signal of Bc→Bsπ decay should be easily observed at the Large Hadron Collider.

关 键 词：Bc meson weak decay the perturbative QCD approach branching ratio 

分 类 号：O571.32[理学—粒子物理与原子核物理]