The production of the D meson pair associated with the two-body B~* weak decay
摘要:
采用微扰QCD方法,对基态矢量介子B_q~*通过弱相互作用衰变到末态是2个D介子的过程进行了唯象研究.结果表明,对于未被CKM因子压低的W玻色子外发射过程B_s*0→D_s^+D_s^-,B_d*0→D_s^+D_d^-,B_u*+→D_s^+_u^0等,其分支比可以达到10-9量级.这些过程很有可能在未来被大型强子对撞机LHC和超级B工厂SuperKEKB等实验探测到.
In this paper,the two body weak decays of the ground vector B*meson into the D meson pair are investigated with the perturbative QCD approach.It shows that the CKM allowed processes,such as the B*0s→D+sD-s,B*0d→D+sD-d,B*+u→D+u0u decays,which are mainly induced by the external W emission interactions,can have the branching ratio of10-9.These processes might be promisingly accessible to the LHC and SuperKEKB experiments in the near future.
作者:
杨悦玲 高洁 李海燕 卢飞翔 郭育培
Yang Yueling;Gao Jie;Li Haiyan;Lu Feixiang;Guo Yupei(College of Physics and Materials Science, Henan Normal University, Xinxiang 453007, China)
机构地区:
betway官方app 物理与材料科学学院
出处:
《betway官方app 学报:自然科学版》 CAS 北大核心 2018年第1期45-49,共5页
基金:
国家自然科学基金(U1632109 11705047 11547014) betway官方app 博士启动课题(QD14205)
关键词:
B*介子 微扰QCD方法 分支比
B* meson perturbative QCD approach branching ratio
分类号:
O572.2 [理学—粒子物理与原子核物理] O413 [理学—理论物理]