标题： 中微子磁矩通道的对撞机前景 显示英文标题

标题： Collider Prospects for the Neutrino Magnetic Moment Portal

摘要： 活性中微子和惰性中微子之间的过渡磁矩是标准模型之外一个理论上很有说服力的场景，可以在宇宙学、天体物理学和地面上的实验中进行探测。 在本工作中，我们通过检查这种相互作用在提议的轻子对撞机上的情况来关注后者。 具体来说，除了重新审视LEP，我们还考虑了CEPC、FCC-ee、CLIC和μ子对撞机，这是由于其中任何一个都有可能实现。 在有效场论框架下，我们提出了可以探测的参数区域，并强调了与惰性中微子相互作用的轻子味的依赖性。 通过包括在高能轻子对撞机上具有大惰性中微子产生截面的几种新过程，我们发现活性到惰性中微子的过渡磁矩的预期灵敏度可以达到$d_\gamma \simeq \mathcal{O}(10^{-7})$ GeV$^{-1}$。 显示英文摘要

摘要： The transition magnetic moment between active and sterile neutrinos is theoretically well-motivated scenario beyond the Standard Model, which can be probed in cosmology, astrophysics, and at terrestrial experiments. In this work, we focus on the latter by examining such an interaction at proposed lepton colliders. Specifically, in addition to revisiting LEP, we consider CEPC, FCC-ee, CLIC, and the muon collider, motivated by the potential realization of any of them. Within the effective field theory framework, we present parameter regions that can be probed, highlighting the dependence on the lepton flavor interacting with the sterile neutrino. By including several new processes with large sterile neutrino production cross sections at high-energy lepton colliders, we find that the expected sensitivity for the active-to-sterile neutrino transition magnetic moment can reach $d_\gamma \simeq \mathcal{O}(10^{-7})$ GeV$^{-1}$.