Thermally modified sterile neutrino portal dark matter and gravitational waves from phase transition: the freeze-in case

被引：54
作者：
Bian, Ligong [1 ,2 ]
Tang, Yi-Lei [3 ]
机构：
[1] Chongqing Univ, Dept Phys, Chongqing 401331, Peoples R China
[2] Chung Ang Univ, Dept Phys, Seoul 06974, South Korea
[3] Korea Inst Adv Study, Quantum Universe Ctr, Seoul 02455, South Korea
来源：
JOURNAL OF HIGH ENERGY PHYSICS | 2018年 / 12期
基金：
新加坡国家研究基金会; 中国国家自然科学基金;
关键词：
Beyond Standard Model; Cosmology of Theories beyond the SM; Thermal Field Theory; RADIATION;
D O I：
10.1007/JHEP12(2018)006
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
We consider the thermal effects into the evaluation of the dark matter production process. With the assistance of the right handed neutrinos, the freeze-in massive particle dark matter production history can be modified by the two-step phase transitions. The kinematic of decay/inverse decay or annihilation processes can be affected by the finite temperature effects as the Universe cools down. The history of the symmetry respected by the model can be revealed by the DM relic abundance evolution processes. The strong first order electroweak phase transition generated gravitational waves can be probed. The number of extra scalars for the Hierarchy problem can be probed through the Higgs off-shell searches at the LHC.
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页数：29
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