Dark-matter electric and magnetic dipole moments

被引：239

作者：

Sigurdson, K

Doran, M

Kurylov, A

Caldwell, RR

Kamionkowski, M

机构：

[1] CALTECH, Pasadena, CA 91125 USA

[2] Dartmouth Coll, Dept Phys & Astron, Wilder Lab 6127, Hanover, NH 03755 USA

来源：

PHYSICAL REVIEW D | 2004年 / 70卷 / 08期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevD.70.083501

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We consider the consequences of a neutral dark-matter particle with a nonzero electric and/or magnetic dipole moment. Theoretical constraints, as well as constraints from direct searches, precision tests of the standard-model, the cosmic microwave background and matter power spectra, and cosmic gamma rays, are included. We find that a relatively light particle with mass between an MeV and a few GeV and an electric or magnetic dipole as large as similar to3x10(-16)e cm (roughly 1.6x10(-5)mu(B)) satisfies all experimental and observational bounds. Some of the remaining parameter space may be probed with forthcoming more sensitive direct searches and with the Gamma-Ray Large Area Space Telescope.

引用

页数：15

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