A 130 GeV gamma ray signal from supersymmetry

被引：6

作者：

Shakya, Bibhushan ^{[1
]}

机构：

[1] Cornell Univ, Lab Elementary Particle Phys, Ithaca, NY 14853 USA

来源：

PHYSICS OF THE DARK UNIVERSE | 2013年 / 2卷 / 02期

基金：

美国国家科学基金会;

关键词：

Supersymmetric dark matter; NEUTRALINO ANNIHILATION; DARK-MATTER;

D O I：

10.1016/j.dark.2013.05.001

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The viability of neutralino dark matter as an explanation of the 130 GeV gamma ray signal from the Galactic Center recently observed by the Fermi Large Area Telescope is examined. It is found that the signal can be compatible with a sharp feature from internal bremsstrahlung from a mostly bino dark matter particle of mass around 145 GeV, augmented by a contribution from annihilation into gamma + Z via a small wino admixture. This scenario circumvents the problematic overproduction of lower energy continuum photons that plague line interpretations of this signal. Sleptons approximately degenerate in mass with the neutralino are required to enhance the internal bremsstrahlung feature. (C) 2013 Bibhushan Shakya. Published by Elsevier B.V.

引用

页码：83 / 89

页数：7

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