Multicomponent Dark Matter in Radiative Seesaw Model and Monochromatic Neutrino Flux
Multicomponent Dark Matter in Radiative Seesaw Model and Monochromatic Neutrino Flux
复制标题
辐射跷跷板模型和单色中微子通量中的多组分暗物质
DOI：
10.1103/physrevd.90.076011
复制
发表时间：
2014
影响因子：
5
通讯作者：
H. Takano
中科院分区：
文献类型：
--
作者：
M. Aoki;J. Kubo;H. Takano
我们考虑了一个精确对称的双环辐射跷跷板模型，它可以稳定两个或三个暗物质粒子。该模型是Ma惰性标量模型的简单推广，其中惰性标量的轻子数违反质量项在单回路水平产生，对于小中微子质量要求该质量项较小。不同暗物质粒子的半湮灭过程，当存在三个以上不同的暗物质粒子时就会出现，不仅对它们的遗迹密度起着重要作用，而且对暗物质湮灭过程产生的单色中微子线也负有责任。单色中微子不受手性抑制，我们研究了来自太阳的单色中微子通量的观测可能性。
We consider a two-loop radiative seesaw model with an exactsymmetry, which can stabilize two or three dark matter particles. The model is a simple extension of the inert scalar model of Ma, where the lepton-number violating mass term of the inert scalar, which is required to be small for small neutrino masses, is generated at the one-loop level. The semiannihilation processes of different dark matter particles, which are present when there exist more than three different dark matter particles, not only play an important role for their relic densities but also are responsible for the monochromatic neutrino lines resulting from the dark matter annihilation processes. The monochromatic neutrinos do not suffer from a chiral suppression, and we investigate the observational possibility of the monochromatic neutrino flux from the Sun.