QCD sum rule analysis of semileptonic Bs1, Bs2*, Bs0* and Bs1′ decays in heavy quark effective theory

被引：6
|
作者：
Gan, Long-Fei [1 ]
Huang, Ming-Qiu [1 ]
机构：
[1] Natl Univ Def Technol, Dept Phys, Coll Sci, Changsha 410073, Hunan, Peoples R China
来源：
PHYSICAL REVIEW D | 2010年 / 82卷 / 05期
基金：
中国国家自然科学基金;
关键词：
RESONANCE PHYSICS; FORM-FACTORS; MESONS; PREDICTIONS; MASSES; ORDER;
D O I：
10.1103/PhysRevD.82.054035
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present an analysis of semileptonic decays of orbitally, P-wave excited B-s meson states B-s**, including the newly found narrow B-s1(5830) and B-s2*(5840) states, into low-lying D-s mesons (D-s(1968), D-s*(2112), D-sJ(2317), D-sJ(2460)) within the framework of the heavy quark effective theory. The relevant universal form factors are estimated using QCD sum rules at the leading order of the heavy quark expansion. The decay widths are predicted and the branching ratios are estimated.
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页数：12
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