The Galactic Center Region Gamma Ray Excess from A Supersymmetric Leptophilic Higgs Model
arXiv:1102.0492 · doi:10.1007/JHEP05(2011)026
Abstract
In a recent paper by Hooper and Goodenough, data from the Fermi Gamma Ray Telescope was analyzed and an excess of gamma rays was claimed to be found in the emission spectrum from the Galactic Center Region. Hooper and Goodenough suggest that the claimed excess can be well explained by 7-10 GeV annihilating dark matter with a power law density profile if the dark matter annihilates predominantly to tau pairs. In this paper we present such a dark matter model by extending the MSSM to include four Higgs doublets and one scalar singlet. A Z2 symmetry is imposed that enforces a Yukawa structure so that the up quarks, down quarks, and leptons each receive mass from a distinct doublet. This leads to an enhanced coupling of scalars to leptons and allows the model to naturally achieve the required phenomenology in order to explain the gamma ray excess. Our model yields the correct dark matter thermal relic density and avoids collider bounds from measurements of the Z width as well as direct production at LEP.
21 pages LaTeX, 1 eps figure, 6 tables. Version accepted for publication in JHEP
References in corpus (17)
- Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
- First results from DAMA/LIBRA and the combined results with DAMA/NaI
- New results from DAMA/LIBRA
- Results from a Search for Light-Mass Dark Matter with a P-type Point Contact Germanium Detector
- Search for Neutral MSSM Higgs Bosons at LEP
- Results from a Low-Energy Analysis of the CDMS II Germanium Data
- First Dark Matter Results from the XENON100 Experiment
- A Consistent Dark Matter Interpretation For CoGeNT and DAMA/LIBRA
- The Leptonic Higgs as a Messenger of Dark Matter
- Gamma Rays From The Galactic Center and the WMAP Haze
- Prospects For Identifying Dark Matter With CoGeNT
- Particle Physics Implications for CoGeNT, DAMA, and Fermi
- Light Higgs Boson, Light Dark Matter and Gamma Rays
- Dark matter annihilation through a lepton-specific Higgs boson
- A Two-Singlet Model for Light Cold Dark Matter
- The Supersymmetric Leptophilic Higgs Model
- Constraining the MSSM with Dark Matter indirect detection data
Cited by in corpus (6)
- A Tale of Tails: Dark Matter Interpretations of the Fermi GeV Excess in Light of Background Model Systematics
- WIMPs at the Galactic Center
- Fitting the Galactic Center Gamma-Ray Excess with Cascade Annihilations
- Hidden Sector Dark Matter Models for the Galactic Center Gamma-Ray Excess
- Search for Gamma-ray Emission from Dark Matter Annihilation in the Large Magellanic Cloud with the Fermi Large Area Telescope
- Lining up the Galactic Center Gamma-Ray Excess