Resonancesρ(1450)^(+)andρ(1700)^(+)in B→DKK decays  

作　　者：Ai-Jun Ma Wen-Fei Wang 马爱军;王文飞(Department of Mathematics and Physics,Nanjing Institute of Technology,Nanjing 211167,China;Institute of Theoretical Physics,Shanxi University,Taiyuan 030006,China)

机构地区：[1]Department of Mathematics and Physics,Nanjing Institute of Technology,Nanjing 211167,China [2]Institute of Theoretical Physics,Shanxi University,Taiyuan 030006,China

出　　处：《Chinese Physics C》2022年第5期38-43,共6页中国物理C（英文版）

基　　金：Supported by the National Natural Science Foundation of China(11947011);the Natural Science Foundation of Jiangsu Province(BK20191010);the Scientific Research Foundation of Nanjing Institute of Technology(YKJ201854)。

摘　　要：The contributions for the kaon pair from the intermediate statesρ(1450)^(+) andρ(1700)^(+) in the decays B+→D¯^(0)K+K¯^(0),B^(0)→D−K+K¯^(0),and B^(0)_(s)→D−_(s)K+K¯^(0)are analyzed within the perturbative QCD factorization approach.The decay amplitudes for all concerned decays in this work are dominated by the factorizable Feynman diagrams with the emission of the kaon pair,and the chargedρmesons should be of great importance in the KK channel of the related three-body B decays.Moreover,these quasi-two-body decays are CKM-favored,and the relevant branching ratios are predicted to be in the order of 10^(−5),which have the potential to be measured by experiments.It is also shown that the contributions of the subprocessesρ(1450,1700)^(+)→KK for the three-body B meson decays are considerable according to the total three-body branching fractions presented by Belle.Therefore,the decays B+→D¯^(0)K+K¯^(0),B^(0)→D−K+K¯^(0),and B^(0)_(s)→D−_(s)K^(+)K¯^(0)can be employed to study the properties ofρ(1450)andρ(1700)in the LHCb and Belle-II experiments.

关 键 词：three-body B meson decays resonance contributions perturbative QCD factorization approach 

分 类 号：O571.3[理学—粒子物理与原子核物理]