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arXiv 1406.0158hep-ph
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单重态推广的标准模型中普朗克尺度下消失的Higgs势

Vanishing Higgs potential at the Planck scale in a singlet extension of the standard model

Naoyuki Haba, Hiroyuki Ishida, Kunio Kaneta, Ryo Takahashi

摘要:

本文讨论了在含有单重标量暗物质和右手中微子的标准模型中,实现普朗克尺度下多点临界原理(MPCP)所要求的零有效Higgs势.我们发现标量暗物质和右手中微子对实现MPCP起着至关重要的作用,其中中微子Yukawa在右手中微子的Majorana质量以上变得有效。一旦确定了顶质量,(约化)普朗克尺度下的MPCP和适当的暗物质残余丰度决定了暗物质的质量$m_S$和右手中微子的马约拉纳质量$M_R$,即$8.5~(8.0)\times10^2~{\rm GeV}\leq m_S\leq1.4~(1.2)\times10^3~{\rm GeV}$和$6.3~(5.5)\times10^{13}~{\rm GeV}\leq M_R\leq1.6~(1.2)\times10^{14}~{\rm GeV}$,它们都在希格斯玻色子和顶质量的当前实验值之内。这种情况与目前的暗物质直接搜索实验是一致的,并将通过未来的实验,如LUX与进一步曝光和/或XENON 1 T检查。

英文摘要:

We discuss the realization of a vanishing effective Higgs potential at the Planck scale, which is required by the multiple-point criticality principle (MPCP), in the standard model with singlet scalar dark matter and a right-handed neutrino. We find the scalar dark matter and the right-handed neutrino play crucial roles for realization of the MPCP, where a neutrino Yukawa becomes effective above the Majorana mass of the right-handed neutrino. Once the top mass is fixed, the MPCP at the (reduced) Planck scale and the suitable dark matter relic abundance determine the dark matter mass, $m_S$, and the Majorana mass of the right-handed neutrino, $M_R$, as $8.5~(8.0)\times10^2~{\rm GeV}\leq m_S\leq1.4~(1.2)\times10^3~{\rm GeV}$ and $6.3~(5.5)\times10^{13}~{\rm GeV}\leq M_R\leq1.6~(1.2)\times10^{14}~{\rm GeV}$ within current experimental values of the Higgs and top masses. This scenario is consistent with current dark matter direct search experiments, and will be checked by future experiments such as LUX with further exposure and/or the XENON1T.

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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