Supersymmetric B-L dark matter model and the observed anomalies in the cosmic rays

被引：42

作者：

Allahverdi, Rouzbeh ^{[1
]}

Dutta, Bhaskar ^{[2
]}

Richardson-McDaniel, Katherine ^{[1
]}

Santoso, Yudi ^{[3
]}

机构：

[1] Univ New Mexico, Dept Phys & Astron, Albuquerque, NM 87131 USA

[2] Texas A&M Univ, Dept Phys, College Stn, TX 77843 USA

[3] Univ Durham, Dept Phys, Inst Particle Phys Phenomenol, Durham DH1 3LE, England

来源：

PHYSICAL REVIEW D | 2009年 / 79卷 / 07期

关键词：

L SYMMETRY;

D O I：

10.1103/PhysRevD.79.075005

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We propose a simple model of supersymmetric dark matter that can explain recent results from PAMELA and ATIC experiments. It is based on a U(1)(B-L) extension of the minimal supersymmetric standard model. The dark matter particle is a linear combination of the U(1)(B-L) gaugino and Higgsino partners of Higgs fields that break the B-L around 1 TeV. The dominant mode of dark matter annihilation is to the lightest of the new Higgs fields, which has a mass in the GeV range, and its subsequent decay mainly produces taus or muons by the virtue of B-L charges. This light Higgs also results in Sommerfeld enhancement of the dark matter annihilation cross section, which can be greater than or similar to 10(3). For a dark matter mass in the 1-2 TeV range, the model provides a good fit to the PAMELA data and a reasonable fit to the ATIC data. We also briefly discuss the prospects of this model for direct detection experiments and the LHC.

引用

页数：5

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