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arXiv 2211.04722hep-phhep-th
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最小跷跷板框架中可见与暗扇区不对称性的共同起源

Cogenesis of visible and dark sector asymmetry in a minimal seesaw framework

Utkarsh Patel, Lekhika Malhotra, Sudhanwa Patra, Urjit A. Yajnik

AI总结:

本文在最小跷跷板框架下,不引入额外对称性,实现非对称暗物质,统一解释中微子质量、暗物质丰度及可见与暗扇区物质-反物质不对称性的共同起源。

摘要:

近期,人们重新关注以更受约束的方式探索宇宙的暗扇区。特别是在文献[1]中,FIMP(微弱相互作用大质量粒子)情景被证明可以通过对标准模型进行最小扩展来实现,即按照νMSM的精神引入三个惰性中微子。在本文中,我们表明,在不引入模型任何额外对称性的情况下,可以实现ADM(非对称暗物质)的思想,这表明可见扇区和暗扇区中物质-反物质不对称性具有共同起源。该模型允许暗物质质量范围为1-100 keV,并通过I型跷跷板机制正确产生有源中微子质量。因此,该模型解释了中微子质量、暗物质丰度,并在暗扇区复制了可见扇区的物质-反物质不对称性,所有这些都在νMSM的一个版本中实现。暗扇区中的不对称性表现为共动参考系中某一宇称的重中微子占主导地位,这应在正在进行的实验中得到确定。

英文摘要:

Recently there is a renewed interest in exploring the Dark sector of the universe in a more constrained way. Particularly in [1], the FIMP ( Feebly Interacting Massive Particle) scenario was shown to be realized with a minimal extension of the SM with three sterile neutrinos in the spirit of νMSM. In this paper, we show that without invoking any additional symmetries of the model, we can realize the idea of ADM (Asymmetric Dark Matter) signaling a common origin of the matter-anti-matter asymmetries in visible as well as Dark sectors. The model allows for a range of dark matter masses, 1 - 100keV, with correct active neutrino masses through the Type-I seesaw mechanism. Thus, the model explains the neutrino masses, Dark Matter abundance and replicates matter-anti-matter asymmetry of the visible sector in the Dark sector, all in a version of the νMSM. The asymmetry in the dark sector is manifested in the predominance of one parity of the heavy neutrinos in the comoving frame, which should be determinable in the ongoing experiments.

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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