Significant Gamma Lines from Inert Higgs Dark Matter
arXiv:astro-ph/0703512 · doi:10.1103/PhysRevLett.99.041301
Abstract
One way to unambiguously confirm the existence of particle dark matter and determine its mass would be to detect its annihilation into monochromatic gamma-rays in upcoming telescopes. One of the most minimal models for dark matter is the inert doublet model, obtained by adding another Higgs doublet with no direct coupling to fermions. For a mass between 40 and 80 GeV, the lightest of the new inert Higgs particles can give the correct cosmic abundance of cold dark matter in agreement with current observations. We show that for this scalar dark matter candidate, the annihilation signal of monochromatic γγand Zγfinal states would be exceptionally strong. The energy range and rates for these gamma-ray line signals make them ideal to search for with the soon upcoming GLAST satellite.
4 pages, 3 figures; minor changes and text improvements; references updated; published version
Cited by in corpus (15)
- Observing the Dark Scalar Doublet and its Impact on the Standard-Model Higgs Boson at Colliders
- New Gamma-Ray Contributions to Supersymmetric Dark Matter Annihilation
- Gamma Ray Spectrum from Gravitino Dark Matter Decay
- Z_3 Dark Matter and Two-Loop Neutrino Mass
- Conservative Constraints on Dark Matter Annihilation into Gamma Rays
- Optimal angular window for observing Dark Matter annihilation from the Galactic Center region: the case of gamma-ray lines
- Singlet fermion dark matter and electroweak baryogenesis with radiative neutrino mass
- Leptogenesis and dark matter unified in a non-SUSY model for neutrino masses
- Supersymmetric U(1) Gauge Realization of the Dark Scalar Doublet Model of Radiative Neutrino Mass
- Utility of a Special Second Scalar Doublet
- Unified picture for Dirac neutrinos, dark matter, dark energy and matter-antimatter asymmetry
- SU(5) Completion of the Dark Scalar Doublet Model of Radiative Neutrino Mass
- The Inert Doublet Model : a new archetype of WIMP dark matter?
- Antimatter and Gamma-rays from Dark Matter Annihilation
- Cosmological WIMPs, Higgs Dark Matter and GLAST