B→A transitions in the light-cone QCD sum rules with the chiral current

被引：0

作者：

孙艳军 ^{[1
,2
]}

王志刚 ^{[3
]}

黄涛 ^{[1
,2
]}

机构：

[1] Institute of High Energy Physics and Theoretical Physics Center for Science Facilities,Chinese Academy of Sciences

[2] Departments of Physics and Electronic Engineering,Northwest Normal University

[3] Department of Physics,North China Electric Power University

来源：

Chinese Physics C | 2012年 / 11期

关键词：

B-meson decay; axial-vector mesons; light-cone QCD sum rules; chiral current;

D O I：

暂无

中图分类号：

O572.243 [];

学科分类号：

070202 ;

摘要：

In this article,we calculate the form-factors of the transitions B→a1(1260),b1(1235) in the leading-order approximation using the light-cone QCD sum rules.In calculations,we choose the chiral current to interpolate the B-meson,which has the outstanding advantage that the twist-3 light-cone distribution amplitudes of the axial-vector mesons make no contributions,and the resulting sum rules for the form-factors suffer from far fewer uncertainties.Then we study the semi-leptonic decays B→a1(1260)l■l,b 1(1235)l■l(l = e,μ,τ),and make predictions for the differential decay widths and decay widths,which can be compared with the experimental data in the coming future.

引用

页码：1046 / 1054

页数：9