We study the effective field theory (including operators up to dimension five) of models in which dark matter is composite, consisting of either an electroweak doublet Dirac fermion (`higgsino-like dark matter') or an electroweak triplet Majorana fermion (`wino-like dark matter'). Some of the dimension-five operators in the former case cause mass splittings between the neutralino and chargino states, leading to a depleted rate of coannihilations and viable thermal relic dark matter with masses of the order of tens to hundreds of GeV rather than the usual pure higgsino thermal relic mass of 1 TeV. No such effects are found in the latter case (where the usual thermal relic mass is 3 TeV). Other operators, present for both wino- and higgsino-like dark matter, correspond to inelastic electromagnetic dipole moment interactions and annihilation through these can lead to viable models with dark matter masses up by an order of magnitude compared to the usual values.

我们研究了暗物质复合模型的有效场论（包括高达五维的算子），由电弱双重态狄拉克费米子（类希格斯诺暗物质）或电弱三重态马约拉纳费米子（‘wino-像暗物质'）。在前一种情况下，一些五维算子会导致中性子和电荷状态之间的质量分裂，导致共湮没率和可行的热残余暗物质的质量在几十到几百 GeV 数量级，而不是通常的纯物质higgsino 热残余质量为 1 TeV。在后一种情况下（通常的热遗迹质量为 3 TeV）没有发现这种影响。其他算子，同时存在于类 wino 和 higgsino 类暗物质中，