arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1105.5136hep-phastro-ph.CO
收藏

用Froggatt-Nielsen机制推导keV无菌中微子暗物质模型

Deriving Models for keV sterile Neutrino Dark Matter with the Froggatt-Nielsen mechanism

Alexander Merle, Viviana Niro

摘要:

质量在千电子伏左右的惰性中微子是暖暗物质的一个有吸引力的粒子物理候选者。虽然已经提出了许多框架,这些中微子可以满足所有的唯象约束,但几乎没有任何已知的模型可以解释这样一种特殊的质量模式,一个在keV尺度上的不育中微子和另外两个相当重,同时与低能中微子数据兼容。在本文中,我们提出了基于Froggatt-Nielsen机制的模型,可以给出这样的解释。我们解释了如何分配Froggatt-Nielsen收费在一个成功的方式,我们给出了详细的讨论,所有的条件要满足。事实证明,当试图仔细考虑所有约束时,电荷分配的典型任意性大大降低。此外,我们提出了一些简化模型的分析计算,而准完美的模型被发现数值。

英文摘要:

Sterile neutrinos with a mass around the keV scale are an attractive particle physics candidate for Warm Dark Matter. Although many frameworks have been presented in which these neutrinos can fulfill all phenomenological constraints, there are hardly any models known that can explain such a peculiar mass pattern, one sterile neutrino at the keV scale and the other two considerably heavier, while at the same time being compatible with low-energy neutrino data. In this paper, we present models based on the Froggatt-Nielsen mechanism, which can give such an explanation. We explain how to assign Froggatt-Nielsen charges in a successful way, and we give a detailed discussion of all conditions to be fulfilled. It turns out that the typical arbitrariness of the charge assignments is greatly reduced when trying to carefully account for all constraints. We furthermore present analytical calculations of a few simplified models, while quasi-perfect models are found numerically.

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。

↑