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arXiv 1104.3934hep-ph
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具有离散规范对称性的中微子质量和暗物质模型

A model for Neutrino Masses and Dark Matter with the Discrete Gauge Symmetry

We-Fu Chang, Chi-Fong Wong

摘要:

构造了一个简单的可重正化U(1)规范模型来解释活动中微子质量的微小性,同时提供了稳定的冷暗物质候选者。局域U(1)对称性被TeV尺度附近的标量场自发破缺。然后在单圈水平上产生活性中微子质量。该模型包含几个冷暗物质候选者,其稳定性由Krauss-Wilczek机制的残余离散规范$Z_2$对称性保证。不像其他的暗物质模型,没有进一步的全球离散或连续对称性的介绍。此外,所有新的自由度超出标准模型后,获得其质量后,自发破缺的U(1),因此,他们可以在或低于TeV的规模进行探测。可能的宇宙学和现象学的后果进行了简要的讨论。

英文摘要:

A simple renormalizable U(1) gauge model is constructed to explain the smallness of the active neutrino masses and provide the stable cold dark matter candidate simultaneously. The local U(1) symmetry is assumed to be spontaneously broken by a scalar field around the TeV scale. The active neutrino masses are then generated at one-loop level. This model contains several cold dark matter candidates whose stability is guaranteed by a residue discrete gauge $Z_2$ symmetry a la the Krauss-Wilczek mechanism. Unlike the other dark matter models, no further global discrete or continuous symmetry is introduced. Moreover, all the new degrees of freedom beyond the Standard Model acquire their masses only after the spontaneous breaking of U(1) thus they could be probed at or below the TeV scale. The possible cosmological and phenomenological consequences are briefly discussed.

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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