Study of semileptonic decays Bs→Ds1(

Study of semileptonic decays Bs→Ds1(2536)l(v) and Bs→Ds2(2573)l(v) in the CQM model

Based on the assumption that Ds1 (2536) and Ds2 (2573) belong to T doublet (1+,2+),we calculate the semileptonic decays of Bs to Ds1(2536) and Ds2(2573) in terms of the Constituent Quark Meson (CQM)model.For Bs→Ds1(2536)+l(v) and Bs→Ds2(2573)+l(v),the order of magnitude of the obtained branching ratios is 10-3.Our numerical results of the semileptonic decays of Bs to Ds1(2536) and Ds2(2573) are large,which implies that two semileptonic decays should be seen in future experiments.

作 者： ZHAO Shu-Min ZHANG Yin-Jie YAN Yu-Li LIU Li-Quan WU Li-Ping   作者单位： College of Physics Science and Technology,Hebei University,Baoding 071002,China  刊 名： 中国物理C(英文版)  ISTIC 英文刊名： CHINESE PHYSICS　C  年，卷(期)： 2008 32(8)  分类号： O4  关键词： semileptonic decay   CQM model   branching ratios  

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