Semileptonic Decays of Bs Mesons into Dsl and Ds2 in HQET

• 作者: 甘龙飞 黄明球
• 来源期刊: 理论物理通讯：英文版
• 学科: 工学
• 关键词: 介子衰变 DSL QCD求和规则 Bs 分段函数 重夸克 分支比 衰变率
• 年，卷（期）: 2012,（1）
• 页码范围: 85-92
• 页数: 8页
• 分类号: O572.243|TL594
• 语种: 英文

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.