Two-portal Dark Matter

Abstract

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 $U(1{)}^{\prime }$ gauge symmetry while the standard model has a leptophobic interaction with the dark vector boson. The leading contribution of 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 from a 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 $\sim 34$ GeV annihilating into $b$ quark pair, which explains the Fermi-LAT gamma-ray excess.

17 pages, two figures added, conclusion is extended, typos corrected, to appear in PRD

References in corpus (17)

• Dark Matter Results from 225 Live Days of XENON100 Data
• Secluded WIMP Dark Matter
• Background model systematics for the Fermi GeV excess
• Hadronic Uncertainties in the Elastic Scattering of Supersymmetric Dark Matter
• A Tale of Tails: Dark Matter Interpretations of the Fermi GeV Excess in Light of Background Model Systematics
• Simplified Dark Matter Models for the Galactic Center Gamma-Ray Excess
• A taste of dark matter: Flavour constraints on pseudoscalar mediators
• A Renormalizable Model for the Galactic Center Gamma Ray Excess from Dark Matter Annihilation
• Singlet fermionic dark matter
• NMSSM Interpretation of the Galactic Center Excess
• Axial Dark Matter: the case for an invisible Z'
• The Galactic Center Excess from the Bottom Up
• Fermionic dark matter with pseudo-scalar Yukawa interaction
• LanHEP - a package for automatic generation of Feynman rules from the Lagrangian. Updated version 3.1
• Z' Mediated Dark Matter Models for the Galactic Center Gamma-Ray Excess
• Dirac Neutrino Dark Matter
• SUSY Implications from WIMP Annihilation into Scalars at the Galactic Centre

Cited by in corpus (4)

• Review of LHC Dark Matter Searches
• $Z^{\prime }$-portal right-handed neutrino dark matter in the minimal U(1)${}_X$ extended Standard Model
• Dark Forces in the Sky: Signals from Z' and the Dark Higgs
• Dark matter properties implied by gamma ray interstellar emission models