Lepton number asymmetry via inflaton decay in a modified radiative seesaw model.
Lepton number asymmetry via inflaton decay in a modified radiative seesaw model.
复制标题
改进的辐射跷跷板模型中暴胀子衰变导致的轻子数不对称。
DOI：
10.1016/j.physletb.2015.08.062
复制
发表时间：
2015
影响因子：
4.4
通讯作者：
Daijiro Suematsu.
中科院分区：
文献类型：
--
作者：
Shoichi Kashiwase;Daijiro Suematsu.
我们提出了一种在辐射中微子质量模型中产生重子数不对称性的非热情景，该模型经过修改以实现早期宇宙的膨胀。在这种情况下，暴胀子在中微子质量和轻子数量不对称的产生中都起着至关重要的作用。轻子数不对称首先是通过暴胀子的直接衰变在暗物质区域产生的。它通过暗物质湮灭转移到轻子区域，然后由于闪子相互作用而转化为重子数不对称性。所有的中微子质量、重子数不对称性和暗物质都通过暴胀子紧密相连。
We propose a non-thermal scenario for the generation of baryon number asymmetry in a radiative neutrino mass model which is modified to realize inflation at the early Universe. In this scenario, inflaton plays a crucial role in both generation of neutrino masses and lepton number asymmetry. Lepton number asymmetry is firstly generated in the dark matter sector through direct decay of inflaton. It is transferred to the lepton sector via the dark matter annihilation and then converted to the baryon number asymmetry due to the sphaleron interaction. All of the neutrino masses, the baryon number asymmetry and the dark matter are intimately connected to each other through the inflaton.