发表机构
Technical University of Munich; Korea Institute for Advanced Study（慕尼黑工业大学; 韩国高等研究院）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文推导了Dirac和Majorana自旋1/2费米子单圈电磁矩的一般表达式，并讨论了其对暗物质候选粒子和标准模型中微子等中性费米子的影响。
AI 中文摘要
电中性的自旋1/2费米子可以通过Yukawa耦合或规范耦合与带电粒子相互作用，从而导致中性费米子与光子之间产生量子诱导的耦合。在本文中，我们给出了Dirac和Majorana自旋1/2费米子在单圈水平上产生的对角和跃迁电磁矩的一般表达式。我们还简要讨论了这些结果对若干具有现象学意义的中性自旋1/2费米子的影响，例如$SU(2)_L$多重态的中性分量（它们是暗物质的潜在候选者）或标准模型中的中微子。
英文摘要
Electrically neutral spin-1/2 fermions can interact via Yukawa or gauge couplings with electrically charged particles, leading to quantum-induced couplings between the neutral fermion and the photon. In this paper, we present general expressions for the diagonal and transition electromagnetic moments of Dirac and Majorana spin-1/2 fermions generated at the one-loop level. We also briefly discuss the implications of these results for several neutral spin-1/2 fermions of phenomenological interest, such as neutral components of $SU(2)_L$ multiplets (which are potential candidates for dark matter) or Standard Model neutrinos.
Comments34 pages, 7 figures
