论文标题
具有非局部手性有效理论的八位字重子的电磁形式因子
Electromagnetic form factors of octet baryons with the nonlocal chiral effective theory
论文作者
论文摘要
通过非局部手性有效理论研究了八位核重子的电磁形式。非局部交互产生了调节器，这使得循环积分收敛和$ q^2 $在树级别的形态依赖性。八位位和解剖中间状态都包含在一个循环计算中。研究了Baryon形态因子的动量依赖性，最多可达1 GEV $^2 $，其参数数量与核子形式相同。所有Baryon八位骨和半径的获得的磁矩与实验数据和/或晶格模拟都非常吻合。
The electromagnetic form factors of octet baryons are investigated with the nonlocal chiral effective theory. The nonlocal interaction generates both the regulator which makes the loop integral convergent and the $Q^2$ dependence of form factors at tree level. Both octet and decuplet intermediate states are included in the one loop calculation. The momentum dependence of baryon form factors are studied up to 1 GeV$^2$ with the same number of parameters as for the nucleon form factors. The obtained magnetic moments of all the baryon octets as well as the radii are in good agreement with the experimental data and/or lattice simulation.
