We study self-conjugate dark matter (DM) particles interacting primarily with Standard Model (SM) leptons in an effective field theoretical framework. We consider SM gauge-invariant effective contact interactions between Majorana fermion, real scalar and real vector DM with leptons by evaluating the Wilson coefficients appropriate for interaction terms up to dimension 8, and obtain constraints on the parameters of the theory from the observed relic density, indirect detection observations and from the DM-electron scattering cross-sections in direct detection experiments. Low energy LEP data has been used to study sensitivity in the pair production of low mass ( 80 GeV) DM particles. Pair production of DM particles of mass 50 GeV in association with mono-photons at the proposed ILC has rich potential to probe such effective operators.

我们在有效场理论框架中研究主要与标准模型 (SM) 轻子相互作用的自共轭暗物质 (DM) 粒子。我们通过评估适用于高达 8 维的相互作用项的威尔逊系数来考虑马约拉纳费米子、实标量和实矢量 DM 与轻子之间的 SM 规范不变有效接触相互作用，并从观察到的遗迹密度中获得对理论参数的约束，间接检测观察和直接检测实验中的 DM 电子散射截面。低能 LEP 数据已被用于研究低质量 ( 80 GeV) DM 粒子对的敏感性。对产生大量 DM 粒子在拟议的 ILC 中，与单光子相关的 50 GeV 具有探索此类有效算子的巨大潜力。