Two-portal dark matter

被引：28

作者：

Ghorbani, Karim ^{[1
]}

Ghorbani, Hossein ^{[2
]}

机构：

[1] Arak Univ, Fac Sci, Dept Phys, Arak 3815688349, Iran

[2] Sch Particles & Accelerators, Inst Res Fundamental Sci IPM, Tehran, Iran

来源：

PHYSICAL REVIEW D | 2015年 / 91卷 / 12期

关键词：

PHENOMENOLOGY; PHYSICS; MODEL;

D O I：

10.1103/PhysRevD.91.123541

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We propose a renormalizable dark matter model in which a fermionic dark matter (DM) candidate communicates with the standard model particles through two distinct portals: Higgs and vector portals. The dark sector is charged under a U(1)' gauge symmetry while the standard model has a leptophobic interaction with the dark vector boson. The leading contribution of the DM-nucleon elastic scattering cross section begins at one-loop level. The model meets all the constraints imposed by direct detection experiments provided by LUX and XENON100, observed relic abundance according to WMAP and Planck, and the invisible Higgs decay width measured at the LHC. It turns out that the dark matter mass in the viable parameter space can take values froma few GeV up to 1 TeV. This is a new feature which is absent in the models with only one portal. In addition, we can find in the constrained regions of the parameter space a DM mass of similar to 34 GeV annihilating into b quark pair, which explains the Fermi-LAT gamma-ray excess.

引用

页数：10

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