Small neutrino masses confirmed in the neutrino oscillation experiments indicate the need for new physics beyond the standard model. Seesaw mechanism is an interesting way to extend the standard model for explaining the neutrino masses. In a low-scale type-I seesaw mechanism, the tiny masses of neutrinos can be explained by heavy Majorana neutrino masses. Heavy Majorana neutrinos can lead to lepton-number-violating processes and the induced CP violation can contribute to the baryon asymmetry in the Universe. Heavy Majorana neutrinos can also lead to lepton-number-conserving processes and in this paper, we study the CP violation in lepton-number-conserving processes through heavy Majorana neutrinos at future lepton colliders. New possible observations of CP violation can also be connected to evidences of new physics beyond the standard model.

中文翻译：

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未来轻子对撞机中的重马约拉纳中微子导致轻子数守恒过程中的CP破坏


中微子振荡实验中证实的小中微子质量表明需要超越标准模型的新物理学。跷跷板机制是扩展解释中微子质量的标准模型的一种有趣方法。在低尺度的 I 型跷跷板机制中，微小的中微子质量可以用重的马约拉纳中微子质量来解释。重马约拉纳中微子会导致轻子数破坏过程，而引起的CP破坏会导致宇宙中的重子不对称。重马约拉纳中微子也可以导致轻子数守恒过程，在本文中，我们研究了未来轻子对撞机中通过重马约拉纳中微子造成的轻子数守恒过程中的CP破坏。 CP 破坏的新可能观察结果也可以与标准模型之外的新物理证据联系起来。