Abelian dark matter models for 511 keV gamma rays and direct detection

Abstract

We construct a simple U(1) hidden sector model of metastable dark matter that could explain excess 511 keV gamma rays from the galactic center as observed by INTEGRAL, through inelastic scattering of dark matter followed by its decay. Although the model is highly constrained, it naturally accommodates dark matter with mass and cross section in the range suggested by the CoGeNT and CRESST experiments. The dark gauge boson that mediates the interactions with standard model matter has a mass of several hundred MeV, and might be discovered by heavy photon detection experiments, including APEX, MAMI and HPS.

16 pages, 3 figures; v2: improved version, accepted for Annalen der Physik special issue DARK MATTER edited by M. Bartelmann and V. Springel (2012)

References in corpus (20)

• Observation of an anomalous positron abundance in the cosmic radiation
• A Theory of Dark Matter
• First results from DAMA/LIBRA and the combined results with DAMA/NaI
• Measurement of the Cosmic Ray e+ plus e- spectrum from 20 GeV to 1 TeV with the Fermi Large Area Telescope
• Results from a Search for Light-Mass Dark Matter with a P-type Point Contact Germanium Detector
• Exciting Dark Matter and the INTEGRAL/SPI 511 keV signal
• Searching for Dark Matter in the CMB: A Compact Parameterization of Energy Injection from New Physics
• Updated CMB constraints on Dark Matter annihilation cross-sections
• Nonabelian dark matter: models and constraints
• The Galactic Positron Annihilation Radiation & The Propagation of Positrons in the Interstellar Medium
• The galactic 511 keV line from electroweak scale WIMPs
• Galactic 511 keV line from MeV millicharged dark matter
• Annihilation Emission from the Galactic Black Hole
• PAMELA, DAMA, INTEGRAL and Signatures of Metastable Excited WIMPs
• Interacting dark matter contribution to the Galactic 511 keV gamma ray emission: constraining the morphology with INTEGRAL/SPI observations
• Channeling in direct dark matter detection II: channeling fraction in Si and Ge crystals
• Is There a Dark Matter Signal in the Galactic Positron Annihilation Radiation?
• Diurnal modulation due to self-interacting mirror and hidden sector dark matter
• Can the morphology of gamma-ray emission distinguish annihilating from decaying dark matter?
• Low Energy INTEGRAL Positrons from eXciting Dark Matter

Cited by in corpus (9)

• Ruling out the light WIMP explanation of the galactic 511 keV line
• The 511 keV Excess and Primordial Black Holes
• Nonabelian dark matter models for 3.5 keV X-rays
• Pushing the frontier of WIMPy inelastic dark matter: journey to the end of the periodic table
• Cosmic Microwave Background Constraints on Dark Matter Models of the Galactic Center 511 keV Signal
• The Sensitivity of Future Gamma-Ray Telescopes to Primordial Black Holes
• Highlights of Supersymmetric Hypercharge $\pm 1$ Triplets
• The Morphology of Exciting Dark Matter and the Galactic 511 keV Signal
• Dichromatic Dark Matter