Chiral extrapolation of nucleon axial charge gA in effective field theory

Hong-na Li; P. Wang

doi:10.1088/1674-1137/40/12/123106

Chinese Physics C> 2016, Vol. 40> Issue(12) : 123106 DOI: 10.1088/1674-1137/40/12/123106

Chiral extrapolation of nucleon axial charge g_A in effective field theory

Hong-na Li ^1,2,, ,
P. Wang ^1,3,,

1.
Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
2.
College of Physics, Jilin University, Changchun, Jilin 130012, China
3.
Theoretical Physics Center for Science Facilities, Chinese Academy of Sciences, Beijing 100049, China

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Abstract：
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.
- chiral extrapolation ,
- nucleon axial charge ,
- effective field theory ,
- finite range regularization

References

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Hong-na Li and P. Wang. Chiral extrapolation of nucleon axial charge g_A in effective field theory[J]. Chinese Physics C, 2016, 40(12): 123106. doi: 10.1088/1674-1137/40/12/123106

Hong-na Li and P. Wang. Chiral extrapolation of nucleon axial charge g_A in effective field theory[J]. Chinese Physics C, 2016, 40(12): 123106. doi: 10.1088/1674-1137/40/12/123106 shu

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Received: 2016-08-17

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Supported by National Natural Science Foundation of China (11475186) and Sino-German CRC 110 (NSFC 11621131001)

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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Chiral extrapolation of nucleon axial charge g_A in effective field theory

Corresponding author: Hong-na Li, lihongna@ihep.ac.cn

Corresponding author: P. Wang, lihongna@ihep.ac.cn

1. Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China

2. College of Physics, Jilin University, Changchun, Jilin 130012, China

3. Theoretical Physics Center for Science Facilities, Chinese Academy of Sciences, Beijing 100049, China

Received Date: 2016-08-17

Available Online: 2016-12-05

Fund Project: Supported by National Natural Science Foundation of China (11475186) and Sino-German CRC 110 (NSFC 11621131001)

Abstract: 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.

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Chiral extrapolation of nucleon axial charge g_A in effective field theory

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