Particle Physics Implications for CoGeNT, DAMA, and Fermi

Abstract

Recent results from the CoGeNT collaboration (as well as the annual modulation reported by DAMA/LIBRA) point toward dark matter with a light (5-10 GeV) mass and a relatively large elastic scattering cross section with nucleons (σ~ 10^{-40} cm^2). In order to possess this cross section, the dark matter must communicate with the Standard Model through mediating particles with small masses and/or large couplings. In this Letter, we explore with a model independent approach the particle physics scenarios that could potentially accommodate these signals. We also discuss how such models could produce the gamma rays from the Galactic Center observed in the data of the Fermi Gamma Ray Space Telescope. We find multiple particle physics scenarios in which each of these signals can be accounted for, and in which the dark matter can be produced thermally in the early Universe with an abundance equal to the measured cosmological density.

4 pages, 2 figures

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Cited by in corpus (39)

• The Characterization of the Gamma-Ray Signal from the Central Milky Way: A Compelling Case for Annihilating Dark Matter
• A Tale of Tails: Dark Matter Interpretations of the Fermi GeV Excess in Light of Background Model Systematics
• Extended gamma-ray emission from Coy Dark Matter
• WIMPs at the Galactic Center
• Flavored Dark Matter and the Galactic Center Gamma-Ray Excess
• Dark Matter investigation by DAMA at Gran Sasso
• WMAP7 and future CMB constraints on annihilating dark matter: implications for GeV-scale WIMPs
• Too massive neutron stars: The role of dark matter?
• Dark Forces and Light Dark Matter
• Hidden Sector Dark Matter Models for the Galactic Center Gamma-Ray Excess
• Challenges in Explaining the Galactic Center Gamma-Ray Excess with Millisecond Pulsars
• Low-mass right-handed sneutrino dark matter: SuperCDMS and LUX constraints and the Galactic Centre gamma-ray excess
• Direct and Indirect Singlet Scalar Dark Matter Detection in the Lepton-Specific two-Higgs-doublet Model
• Extracting limits on Dark Matter annihilation from gamma-ray observations towards dwarf spheroidal galaxies
• A description of the Galactic Center excess in the Minimal Supersymmetric Standard Model
• Search for Gamma-ray Emission from Dark Matter Annihilation in the Large Magellanic Cloud with the Fermi Large Area Telescope
• Supersymmetric Sub-Electroweak Scale Dark Matter, the Galactic Center Gamma-ray Excess, and Exotic Decays of the 125 GeV Higgs Boson
• Dark Matter from Hidden Forces
• Implications of CoGeNT's New Results For Dark Matter
• Light Dark Matter in the light of CRESST-II
• First data from DM-Ice17
• Fits to the Fermi-LAT GeV excess with RH sneutrino dark matter: implications for direct and indirect dark matter searches and the LHC
• The $\text{Fermi}$-LAT gamma-ray excess at the Galactic Center in the singlet-doublet fermion dark matter model
• Light dark matter in leptophobic Z' models
• Confronting Galactic and Extragalactic $\gamma$-ray observed by Fermi-LAT with Annihilating Dark Matter in Inert Higgs Doublet Model
• Minimal hidden sector models for CoGeNT/DAMA events
• Chiral U(1) flavor models and flavored Higgs doublets: the top FB asymmetry and the Wjj
• Particle Physics Implications and Constraints on Dark Matter Interpretations of the CDMS Signal
• W-WIMP Annihilation as a Source of the Fermi Bubbles
• Ruling out $\sim 100-300$ GeV thermal relic annihilating dark matter by radio observation of the Andromeda galaxy
• When LEP and Tevatron combined with WMAP and XENON100 shed light on the nature of Dark Matter
• Testing The Light Dark Matter Hypothesis With AMS
• The Galactic Center Region Gamma Ray Excess from A Supersymmetric Leptophilic Higgs Model
• Lining up the Galactic Center Gamma-Ray Excess
• An optimistic CoGeNT analysis
• Wavelet-Based Techniques for the Gamma-Ray Sky
• Dark Matter Detection with Hard X-ray Telescopes
• Extracting the size of the cosmic electron-positron anomaly
• Search at the CERN LHC for a light neutralino of cosmological interest