Semileptonic Decays of B_s^(**) Mesons into D_(s1) and D_(s2)~* in HQET  

作　　者：GAN Long-Fei HUANG Ming-Qiu 甘龙飞;黄明球(Department of Physics,College of Science,National University of Defense Technology,Changsha 410073,China)

机构地区：[1]Department of Physics,College of Science,National University of Defense Technology,Changsha 410073,China

出　　处：《Communications in Theoretical Physics》2012年第1期85-92,共8页理论物理通讯（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant No. 10975184

摘　　要：In the framework of the heavy quark effective theory, the leading order Isgur-Wise functions relevant to semileptonie decays of the orbitally P-wave excited Bs meson states Bs＊, including the newly found narrow Bs1 （5830） andBs2（5840） states, into the （Ds1（2536）, Ds2（2573）） doublet are calculated from QCD sum rules. With these universal form factors, the decay rates and branching ratios are also estimated.

关 键 词：heavy quark effective theory semileptonic decays QCD sum rules Bs mesons 

分 类 号：O572.33[理学—粒子物理与原子核物理]