Lepton number asymmetry via inflaton decay in a modified radiative seesaw model

被引：13

作者：

Kashiwase, Shoichi ^{[1
]}

Suematsu, Daijiro ^{[1
]}

机构：

[1] Kanazawa Univ, Inst Theoret Phys, Kanazawa, Ishikawa 9201192, Japan

来源：

PHYSICS LETTERS B | 2015年 / 749卷

关键词：

PROBE WMAP OBSERVATIONS; NEUTRINO MASS; DARK-MATTER; LEPTOGENESIS;

D O I：

10.1016/j.physletb.2015.08.062

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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. (C) 2015 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license.

引用

页码：603 / 612

页数：10

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