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arXiv 1802.05231hep-ph
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五维Dirac中微子质量的系统分析

Systematic Analysis of Dirac Neutrino Masses at Dimension Five

Chang-Yuan Yao, Gui-Jun Ding

摘要:

本文系统地研究了具有单重标量的五维有效算符的狄拉克中微子质量。我们确定所有可能的实现这个操作在树级和一个循环的水平。给出了相应的粒子含量和中微子质量矩阵的预测。我们增加了一个$Z_{2}$对称性来禁止可重正化的Yukawa耦合,而非阿贝尔离散味对称性可以用来禁止非真实单圈模型中的树级图。介导环图的电中性粒子可能是暗物质的候选者。我们给出了可能的暗物质粒子和对每个模型的参数$α$的限制。

英文摘要:

We perform a systematic study of the Dirac neutrino masses which arise from a dimension five effective operator with a singlet scalar. We identify all possible realizations of this operator at tree level and one-loop level. The corresponding predictions for the particle content and neutrino mass matrix are presented. We add a $Z_{2}$ symmetry to forbid the renormalizable Yukawa coupling, and non-abelian discrete flavor symmetry can be used to forbid tree level diagrams in non-genuine one-loop models. The electrically neutral particle mediating the loop diagram could be dark matter candidate. We give the possible dark matter particles and the restrictions on the parameter $α$ for each model.

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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