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arXiv 2102.10944hep-ph
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另一种$U(1)_{B-L}$规范对称性的辐射暗物质和中微子质量

Radiative dark matter and neutrino masses from an alternative $U(1)_{B-L}$ gauge symmetry

Hiroshi Okada, Yuta Orikasa, Yutaro Shoji

摘要:

我们提出了一个模型,其中的活动中微子和暗物质候选者的质量产生辐射通过$U(1)_{B-L}$规范对称性破缺。它是通过右手中微子的非普适$U(1)_{B-L}$电荷分配实现的,其中一个变为DM。与弱相互作用大质量粒子的典型质量相比,暗物质的质量通常变得很小,我们对暗物质的约束也更温和。我们考虑的情况下,暗物质是通过冻结机制,并表明所观察到的暗物质遗迹密度可以实现一致的中微子质量和轻子味结构的当前实验约束。

英文摘要:

We propose a model where the masses of the active neutrinos and a dark matter candidate are generated radiatively through the $U(1)_{B-L}$ gauge symmetry breaking. It is realized by a non-universal $U(1)_{B-L}$ charge assignment on the right handed neutrinos and one of them becomes DM. The dark matter mass becomes generally small compared with the typical mass of the Weak Interacting Massive Particles and we have milder constraints on the dark matter. We consider the case where the dark matter is produced through the freeze-in mechanism and show that the observed dark matter relic density can be realized consistently with the current experimental constraints on the neutrino masses and the lepton flavor structure.

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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