Direct and indirect singlet scalar dark matter detection in the lepton-specific two-Higgs-doublet model

被引：67

作者：

Boucenna, M. S. ^{[1
,2
]}

Profumo, S. ^{[2
,3
]}

机构：

[1] Univ Valencia, AHEP Grp, Inst Fis Corpuscular, CSIC, E-46071 Valencia, Spain

[2] Univ Calif Santa Cruz, Dept Phys, Santa Cruz, CA 95064 USA

[3] Univ Calif Santa Cruz, Santa Cruz Inst Particle Phys, Santa Cruz, CA 95064 USA

来源：

PHYSICAL REVIEW D | 2011年 / 84卷 / 05期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevD.84.055011

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A recent study of gamma-ray data from the Galactic center motivates the investigation of light (similar to 7-10 GeV) particle dark matter models featuring tau-lepton pairs as dominant annihilation final state. The lepton-specific two-Higgs-doublet model provides a natural framework where light, singlet scalar dark matter can pair-annihilate dominantly into tau leptons. We calculate the nucleon-dark matter cross section for singlet scalar dark matter within the lepton-specific two-Higgs-doublet model framework, and compare with recent results from direct detection experiments. We study how direct dark matter searches can be used to constrain the dark matter interpretation of gamma-ray observations, for different dominant annihilation final states. We show that models exist with the correct thermal relic abundance that could fit the claimed gamma-ray excess from the Galactic center region and have direct detection cross sections of the order of what is needed to interpret recent anomalous events reported by direct detection experiments.

引用

页数：7

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