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arXiv 1606.02157hep-ph
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太阳暗物质的蒸发:自旋无关的有效算符

On the evaporation of solar dark matter: spin-independent effective operators

Zheng-Liang Liang, Yue-Liang Wu, Zi-Qing Yang, Yu-Feng Zhou

摘要:

作为研究暗物质-核子有效相互作用对太阳暗物质探测影响的一部分,本文主要研究了一组暗物质-核子自旋无关有效算符下太阳暗物质的蒸发.为了把蒸发率的评估在一个更可靠的地面上,我们计算的非热分布的太阳DM使用Monte Carlo方法,而不是采用麦克斯韦近似。然后,我们为各种SI有效运算符指定太阳DM检测的相关信号参数空间。在此基础上,我们确定了能从太阳中微子观测中探测到DM-核子耦合强度的最小DM质量。作为一个有趣的应用,我们的研究还表明,在最近的一个建议,旨在解决太阳丰度问题,调用动量依赖的不对称DM在太阳的蒸发效应不能忽略。

英文摘要:

As a part of the effort to investigate the implications of dark matter (DM)-nucleon effective interactions on the solar DM detection, in this paper we focus on the evaporation of the solar DM for a set of the DM-nucleon spin-independent (SI) effective operators. In order to put the evaluation of the evaporation rate on a more reliable ground, we calculate the non-thermal distribution of the solar DM using the Monte Carlo methods, rather than adopting the Maxwellian approximation. We then specify relevant signal parameter spaces for the solar DM detection for various SI effective operators. Based on the analysis, we determine the minimum DM masses for which the DM-nucleon coupling strengths can be probed from the solar neutrino observations. As an interesting application, our investigation also shows that evaporation effect can not be neglectd in a recent proposal aiming to solve the solar abundance problem by invoking the momentum-dependent asymmetric DM in the Sun.

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