Right-handed sneutrino as cold dark matter

被引：130

作者：

Asaka, T ^{[1
]}

Ishiwata, K ^{[1
]}

Moroi, T ^{[1
]}

机构：

[1] Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan

来源：

PHYSICAL REVIEW D | 2006年 / 73卷 / 05期

关键词：

D O I：

10.1103/PhysRevD.73.051301

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We consider supersymmetric models with right-handed neutrinos where neutrino masses are purely Dirac-type. In this model, right-handed sneutrino can be the lightest supersymmetric particle and can be a viable candidate of cold dark matter of the universe. Right-handed sneutrinos are never thermalized in the early universe because of weakness of Yukawa interaction, but are effectively produced by decays of various superparticles. We show that the present mass density of right-handed sneutrino can be consistent with the observed dark matter density.

引用

页数：5

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