Strange form factors of the nucleon with a nonlocal chiral effective Lagrangian

被引：12

作者：

He, Fangcheng ^{[1
,2
]}

Wang, P. ^{[1
,3
]}

机构：

[1] Chinese Acad Sci, Inst High Energy Phys, POB 918 4, Beijing 100049, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[3] Chinese Acad Sci, Theoret Phys Ctr Sci Facil, Beijing 100049, Peoples R China

来源：

PHYSICAL REVIEW D | 2018年 / 98卷 / 03期

关键词：

PERTURBATION-THEORY; QUARK-MODEL; BARYON OCTET; PARTICLES; NEUTRON;

D O I：

10.1103/PhysRevD.98.036007

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The strange form factors of the nucleon are studied with the nonlocal chiral effective Lagrangian. One loop contributions from both octet and decuplet intermediate states are included. The relativistic regulator is obtained by the nonlocal Lagrangian where the gauge link is introduced to guarantee the local gauge symmetry. With the kaon loop, the calculated charge form factor is positive, while the magnetic form factor is negative. The strange magnetic moment is -0.041(-0.0)(14)(+0.012) with A = 0.9 +/- 0.1 determined from the nucleon electromagnetic form factors. Our results are comparable with the recent lattice simulation.

引用

页数：11

共 55 条

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