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arXiv 1503.07708hep-phhep-ex
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有和没有马约拉纳中微子的轻子数破坏

Lepton Number Violation with and without Majorana Neutrinos

Julian Heeck

摘要:

我们讨论了规范B-L对称性的各种表现形式:1)不破缺,它具有狄拉克中微子、产生宇宙重子不对称性的中微子生成和潜在的轻Z'玻色子; 2)破缺两个单位,我们得到标准的Majorana中微子、跷跷板和热轻生成;(3)发现了四个单位破缺的Dirac中微子,它们具有轻子数破坏的相互作用,这可能导致一种新的Dirac轻子生成机制。我们回顾并讨论了区分这三种情况的签名。

英文摘要:

We discuss the various incarnations of a gauged B-L symmetry: 1) unbroken, it features Dirac neutrinos, neutrinogenesis to create the baryon asymmetry of our Universe, and a potentially light Z' boson; 2) broken by two units, we obtain the standard case of Majorana neutrinos, seesaw and thermal leptogenesis; 3) broken by four units, we find Dirac neutrinos with lepton-number-violating interactions, which can give rise to a new Dirac leptogenesis mechanism. We review and discuss the signatures distinguishing the three scenarios.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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