511 keV γ-ray emission from the galactic bulge by MeV millicharged dark matter

被引：0

作者：

Huh, Ji-Haeng ^{[1
]}

Kim, Jihn E. ^{[1
]}

Park, . Tong-Chul ^{[1
]}

Park, Seong Chan ^{[1
]}

机构：

[1] Seoul Natl Univ, Dept Phys & Astron, Seoul 151747, South Korea

来源：

SUPERSYMMETRY AND THE UNIFICATION OF FUNDAMENTAL INTERACTIONS | 2008年 / 1078卷

关键词：

Millicharged particles; 511 keV line; Dark matter; Galactic bulge;

D O I：

暂无

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We propose a possible explanation for the recently observed anomalous 511 keV tine with a new "millicharged" fermion. The new fermion is light [O(MeV)]. Nevertheless, it has never been observed by any collider experiments by virtue of its tiny electromagnetic charge se. In particular, we constrain parameters of thus millicharged particle if the 511 keV cosmic gamma-ray emission from the galactic bulge is due to positron production from thus new particle.

引用

页码：554 / 556

页数：3

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