Chiral extrapolation of nucleon axial charge gA in effective field theory

被引：0
|
作者：
李洪娜 [1 ,2 ]
王平 [1 ,3 ]
机构：
[1] Institute of High Energy Physics, Chinese Academy of Sciences
[2] College of Physics, Jilin University
[3] Theoretical Physics Center for Science Facilities, Chinese Academy of Sciences
来源：
Chinese Physics C | 2016年 / 12期
基金：
中国国家自然科学基金;
关键词：
chiral extrapolation; nucleon axial charge; effective field theory; finite range regularization;
D O I：
暂无
中图分类号：
O572.34 [重子];
学科分类号：
070202 ;
摘要：
The extrapolation of nucleon axial charge g A is investigated within the framework of heavy baryon chiral effective field theory. The intermediate octet and decuplet baryons are included in the one loop calculation. Finite range regularization is applied to improve the convergence in the quark-mass expansion. The lattice data from three different groups are used for the extrapolation. At physical pion mass, the extrapolated g A are all smaller than the experimental value.
引用
收藏
页码：56 / 60
页数：5
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