TeV-scale Majorogenesis

被引：14

作者：

Abe, Yoshihiko ^{[1
]}

Hamada, Yu ^{[1
]}

Ohata, Takahiro ^{[1
]}

Suzuki, Kenta ^{[1
]}

Yoshioka, Koichi ^{[1
]}

机构：

[1] Kyoto Univ, Dept Phys, Kyoto 6068502, Japan

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2020年 / 2020卷 / 07期

关键词：

Beyond Standard Model; Cosmology of Theories beyond the SM; Neutrino Physics; DARK-MATTER; MAJORON; CONSTRAINTS; SYMMETRY;

D O I：

10.1007/JHEP07(2020)105

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：

The Majoron, the Nambu-Goldstone boson of lepton number symmetry, is an interesting candidate for dark matter as it deeply connects the dark matter and neutrino physics. In this paper, we consider the Majoron dark matter as pseudo Nambu-Goldstone boson with TeV-scale mass. The heavy Majoron generally has the large decay constant and tiny Yukawa couplings to light right-handed neutrinos which are required by cosmological and astrophysical observations. That makes it difficult to realize the desired amount of the relic abundance of Majoron dark matter. We consider three improved scenarios for the generation of Majoron, dubbed as Majorogenesis, in the early universe and find in all cases the parameter space compatible with the relic abundance and cosmic-ray constraints.

引用

页数：19

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