P-wave contributions to B(s)→ψKπ decays in perturbative QCD approach  

作　　者：Ya Li Zhou Rui Zhen-Jun Xiao 李亚;周锐;肖振军(Department of Physics,College of Sciences,Nanjing Agricultural University,Nanjing 210095,China;College of Sciences,North China University of Science and Technology,Tangshan 063009,China;Department of Physics and Institute of Theoretical Physics,Nanjing Normal University,Nanjing 210023,China)

机构地区：[1]Department of Physics,College of Sciences,Nanjing Agricultural University,Nanjing 210095,China [2]College of Sciences,North China University of Science and Technology,Tangshan 063009,China [3]Department of Physics and Institute of Theoretical Physics,Nanjing Normal University,Nanjing 210023,China

出　　处：《Chinese Physics C》2020年第7期22-33,共12页中国物理C（英文版）

基　　金：Supported by the National Natural Science Foundation of China(11947013,11605060,11775117,11547020);Supported by the Natural Science Foundation of Jiangsu Province(BK20190508);the Research Start-up Funding of Nanjing Agricultural University;Supported in part by the Natural Science Foundation of Hebei Province(A2019209449)。

摘　　要：We study the quasi-two-body decays B(s)ψ[K*(892)K*(1410)K*(1680)]ψKπby employing the perturbative QCD(PQCD)factorization approach,where the charmoniaψrepresents J/ψandψ(2S).The corresponding decay channels are studied by constructing the kaon-pion distribution amplitude(DA)ΦKπP,which comprises important final state interactions between the kaon and pion in the resonant region.Relativistic Breit-Wigner formulas are adopted to parameterize the time-like form factor FKπappearing in the kaon-pion DAs.The SU(3)flavor symmetry breaking effect resulting from the mass difference between the kaon and pion is taken into account,which makes significant contributions to the longitudinal polarizations.The observed branching ratios and the polarization fractions of B(s)ψK*(892)ψKπare accommodated by tuning hadronic parameters for the kaon-pion DAs.The PQCD predictions for B(s)ψ[K*(1410)K*(1680)]ψKπmodes from the same set of parameters can be tested by precise data obtained in the future from LHCb and BelleⅡexperiments.

关 键 词：PQCD factorization approach two-meson distribution amplitudes quasi-two-body B meson decays 

分 类 号：O572.3[理学—粒子物理与原子核物理]