| B~*介子两体弱衰变中D介子对产生的研究 |
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| 引用本文： | 杨悦玲,高洁,李海燕,卢飞翔,郭育培. B~*介子两体弱衰变中D介子对产生的研究[J]. 河南师范大学学报(自然科学版), 2018, 0(1): 45-49 |
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| 作者姓名： | 杨悦玲 高洁 李海燕 卢飞翔 郭育培 |
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| 作者单位： | 河南师范大学物理与材料科学学院; |
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| 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.
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| 关 键 词： | B~*介子 微扰QCD方法 分支比 |
The production of the D meson pair associated with the two-body B~* weak decay |
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| Affiliation: | ,College of Physics and Materials Science,Henan Normal University |
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| Abstract: | 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_s~(*0) → D_s~+D_s~-,B_d~(*0) → D_s~+D_d~-,B_u~(*+) → D_u~+_u~0 decays,which are mainly induced by the external W-emission interactions,can have the branching ratio of 10~(-9).These processes might be promisingly accessible to the LHC and SuperKEKB experiments in the near future. |
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| Keywords: | B~* meson perturbative QCD approach branching ratio |
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