标题： 三个核子系统的电偶极矩在无介子有效场论中 显示英文标题

标题： Electric dipole moments of three-nucleon systems in the pionless effective field theory

摘要： 我们计算了在无介子有效场论中三核子系统的电偶极矩（EDMs）在主导阶的值。 从永久质子和中子电偶极矩产生的单体贡献以及从CP奇异数核-核相互作用产生的双体贡献都被考虑在内。 忽略库仑相互作用，我们考虑了氚核和${}^3$He，并且也在Wigner-SU(4)对称极限下研究了它们。 我们还计算了电偶极形式因子，并数值上发现，在Wigner极限下，电偶极形式因子的动量依赖性（除一个整体常数（和数值精度外））与电荷形式因子的动量依赖性相同。 显示英文摘要

摘要： We calculate the electric dipole moments (EDMs) of three-nucleon systems at leading order in pionless effective field theory. The one-body contributions that arise from permanent proton and neutron EDMs and the two-body contributions that arise from CP-odd nucleon-nucleon interactions are taken into account. Neglecting the Coulomb interaction, we consider the triton and ${}^3$He, and also investigate them in the Wigner-SU(4) symmetric limit. We also calculate the electric dipole form factor and find numerically that the momentum dependence of the electric dipole form factor in the Wigner limit is, up to an overall constant (and numerical accuracy), the same as the momentum dependence of the charge form factor.