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Neutrino mass and asymmetric dark matter: study with inert Higgs doublet and high scale validity
Journal of Cosmology and Astroparticle Physics ( IF 6.4 ) Pub Date : 2021-03-15 , DOI: 10.1088/1475-7516/2021/03/037
Amit Dutta Banik 1 , Rishav Roshan 2 , Arunansu Sil 2
Affiliation  

We consider an inert Higgs doublet (IHD) extension of the Standard Model accompanied with three right handed neutrinos and a dark sector, consisting of a singlet fermion and a scalar, in order to provide a common framework for dark matter, leptognesis and neutrino mass. While the Yukawa coupling of the right handed neutrinos with IHD (having mass in the intermediate regime: 80–500 GeV) is responsible for explaining the observed baryon asymmetry through leptogenesis, its coupling with the dark sector explains the dark matter relic density. The presence of IHD also explains the neutrino mass through radiative correction. We find that study of the high scale validity of the model in this context becomes crucial as it restricts the parameter space significantly. It turns out that there exists a small, but non-zero contribution to the relic density of DM from IHD too. Considering all the constraints from dark matter, leptogenesis, neutrino mass and high scale validity of the model, we perform a study to find out the viable parameter space.



中文翻译:

中微子质量和不对称暗物质:惰性希格斯双峰研究和高量表效度

我们考虑标准模型的惰性希格斯双线态 (IHD) 扩展,伴随着三个右手中微子和一个暗扇区,由一个单线态费米子和一个标量组成,以便为暗物质、细粒化和中微子质量提供一个通用框架。虽然右手中微子与 IHD 的 Yukawa 耦合(在中间区域具有质量:80-500 GeV)负责解释通过轻质发生观察到的重子不对称性,但它与暗扇区的耦合解释了暗物质遗迹密度。IHD 的存在还通过辐射校正解释了中微子质量。我们发现在这种情况下研究模型的高尺度有效性变得至关重要,因为它显着限制了参数空间。原来存在一个小的,但 IHD 对 DM 的遗迹密度的贡献也非零。考虑到来自暗物质、轻质生成、中微子质量和模型的高尺度有效性的所有约束,我们进行了研究以找出可行的参数空间。

更新日期:2021-03-15
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