Return of the WIMP: Missing energy signals and the Galactic Center excess

被引：16

作者：

Carena, Marcela ^{[1
,2
,3
]}

Osborne, James ^{[4
]}

Shah, Nausheen R. ^{[4
]}

Wagner, Carlos E. M. ^{[2
,3
,5
]}

机构：

[1] Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA

[2] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA

[3] Univ Chicago, Kavli Inst Cosmol Phys, Chicago, IL 60637 USA

[4] Wayne State Univ, Dept Phys & Astron, Detroit, MI 48201 USA

[5] Argonne Natl Lab, HEP Div, 9700 Cass Ave, Argonne, IL 60439 USA

来源：

PHYSICAL REVIEW D | 2019年 / 100卷 / 05期

关键词：

STANDARD MODEL; PROGRAM; PHENOMENOLOGY; TOOL;

D O I：

10.1103/PhysRevD.100.055002

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In a recent work, we emphasized that an excess in trilepton events plus missing energy observed by the ATLAS experiment at the LHC could be interpreted as a signal of low-energy supersymmetry. In such a scenario the lightest neutralino mass is approximately m(chi) similar or equal to 60 GeV and the direct dark matter detection cross section is naturally below the current bound. In this work we present simple extensions of this scenario that lead to an explanation of the gamma-ray excess at the center of the Galaxy observed by Fermi-LAT, as well as the antiproton excess observed by AMS-02. These extensions include the addition of a small CP-violating phase in the neutralino sector or the addition of a light CP-odd Higgs scalar. Our study is of special relevance in view of a recent analysis that casts doubt on the previously accepted preference for millisecond pulsars as the origin of the Galactic Center excess.

引用

页数：7

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