摘要
Within the framework of perturbative QCD factorization,we investigate the nonfactorizable contributions to the factorization-forbidden quasi-two-body decays B_((s))→h_((χ)_(c0))→hπ^(+)π^(-)(K^(+)K^(-))with h=π,K.We compare our predicted branching ratios for the B_(()(s))→K_(χc0)→Kπ^(+)π-(K^(+)K^(-))decay with available experiment data as well as predictions by other theoretical studies.The branching ratios of these decays are consistent with data and other theoretical predictions.However,in the Cabibbo-suppressed decays B_((s))→h_((χ)_(c0))→hπ^(+)π^(-)(K^(+)K^(-))with h=K^(0),π,the values of the branching ratios are of the order of 10^(-7)and 10^(-8).The ratio R_((χ)_(c0))between the decays B^(+)→π^(+)χ_(c0)→π^(+)π^(+)π^(-)and B^(+)→K^(+)χc0→K^(+)π^(+)π^(-)and the distribution of branching ratios for different decay modes in invariant mass are considered in this study.
作者
张亚兰
王超
林毅
肖振军
Ya-Lan Zhang;Chao Wang;Yi Lin;Zhen-Jun Xiao(Faculty of Mathematics and Physics,Huaiyin Institute of Technology,Huaian 223200,China;Department of Physics and Institute of Theoretical Physics,Nanjing Normal University,Nanjing 210023,China;Jiangsu Key Laboratory for Numerical Simulation of Large Scale Complex Systems,Nanjing Normal University,Nanjing 210023,China)
基金
Supported by the National Natural Science Foundation of China(11235005,11847141,12105112)
the Natural Science Foundation of Jiangsu Education Committee(21KJB140027)
the Natural Science Foundation of Huaiyin Institute of Technology(21HGZ012)。