Multicomponent Dark Matter System with Nonstandard Annihilation Processes of Dark Matter

被引：0

作者：

Aoki, Mayumi ^{[1
,2
]}

Duerr, Michael ^{[2
]}

Kubo, Jisuke ^{[3
]}

Takano, Hiroshi ^{[3
]}

机构：

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

[2] Max Planck Inst Kernphys, D-69117 Heidelberg, Germany

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

来源：

WORKSHOP ON DARK MATTER, UNIFICATION AND NEUTRINO PHYSICS (CETUP 2012) | 2013年 / 1534卷

关键词：

Dark Matter; Neutrino Telescopes; Discrete Symmetries; RELIC DENSITY; NEUTRINOS; MODEL;

D O I：

10.1063/1.4807340

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study multicomponent DM systems with conversions and semiannihilations of dark matter (DM) particles in addition to the standard annihilation processes. It is found that the relic abundance of DM can be very sensitive to these nonstandard DM annihilation processes even if the DM masses are not degenerate. To consider a concrete model of a three-component DM system, we extend a radiative see saw model, so that the DM stabilizing symmetry is promoted to Z(2) x Z'(2). The semiannihilation process in this model produces a monochromatic left-handed neutrino. We estimate the observation rates of the monochromatic neutrinos produced by the semiannihilation of the captured DM particles in the Sun. Observations of high-energy monochromatic neutrinos from the Sun may indicate a multicomponent DM system.

引用

页码：31 / 38

页数：8

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