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arXiv 1607.08672astro-ph.COastro-ph.SRhep-ph
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中微子望远镜热湮灭暗物质的新极限

New Limits on Thermally annihilating Dark Matter from Neutrino Telescopes

José Lopes, Ilídio Lopes

摘要:

我们使用了一个一致的和强大的太阳模型,以获得中微子望远镜,如冰立方和超级神冈,上的暗物质-核子散射截面的上限,一个一般的模型,暗物质与速度相关(p波)的热平均截面。在这张图片中,数值求解了暗物质丰度的玻尔兹曼方程,满足从宇宙微波背景(CMB)测量的暗物质密度。我们发现,对于较低的横截面和较高的质量,暗物质湮灭率急剧下降,导致上界的散射截面上的一个数量级以上的速度无关(s波)湮灭截面。我们的研究结果表明,从太阳中的暗物质湮灭获得的散射截面的上限是敏感的不确定性,在当前的标准太阳模型,波动最大的20%取决于湮灭通道。

英文摘要:

We used a consistent and robust solar model to obtain upper limits placed by neutrino telescopes, such as Ice- Cube and Super-Kamiokande, on the Dark Matter-nucleon scattering cross-section, for a general model of Dark Matter with a velocity dependent (p-wave) thermally averaged cross-section. In this picture, the Boltzmann equation for the Dark Matter abundance is numerically solved satisfying the Dark Matter density measured from the Cosmic Microwave Background (CMB). We show that for lower cross-sections and higher masses, the Dark Matter annihilation rate drops sharply, resulting in upper bounds on the scattering cross-section one order of magnitude above those derived from a velocity independent (s-wave) annihilation cross-section. Our results show that upper limits on the scattering cross-section obtained from Dark Matter annihilating in the Sun are sensible to the uncertainty in current standard solar models, fluctuating a maximum of 20 % depending on the annihilation channel.

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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