A Simple Explanation for DAMA with Moderate Channeling

Abstract

We consider the possibility that the DAMA signal arises from channeled events in simple models where the dark matter interaction with nuclei is suppressed at small momenta. As with the standard WIMP, these models have two parameters (the dark matter mass and the size of the cross-section), without the need to introduce an additional energy threshold type of parameter. We find that they can be consistent with channeling fractions as low as about ~ 15%, so long as at least ~70% of the nuclear recoil energy for channeled events is deposited electronically. Given that there are reasons not to expect very large channeling fractions, these scenarios make the channeling explanation of DAMA much more compelling.

6 pages, 2 figures

References in corpus (19)

• First results from DAMA/LIBRA and the combined results with DAMA/NaI
• The RAVE Survey: Constraining the Local Galactic Escape Speed
• Inelastic Dark Matter in Light of DAMA/LIBRA
• Results from the First Science Run of the ZEPLIN-III Dark Matter Search Experiment
• Possible implications of the channeling effect in NaI(Tl) crystals
• Commissioning Run of the CRESST-II Dark Matter Search
• First limits on WIMP nuclear recoil signals in ZEPLIN-II: a two phase xenon detector for dark matter detection
• Candidates for Inelastic Dark Matter
• Momentum Dependent Dark Matter Scattering
• Interpreting the recent results on direct search for dark matter particles in terms of relic neutralino
• Scintillation efficiency and ionization yield of liquid xenon for mono-energetic nuclear recoils down to 4 keV
• DAMA and WIMP dark matter
• Form Factor Dark Matter
• Resonant Dark Matter
• Using the Energy Spectrum at DAMA/LIBRA to Probe Light Dark Matter
• Search for Dark Matter with CRESST
• Zooming in on light relic neutralinos by direct detection and measurements of galactic antimatter
• Channeling Effect and Improvement of the Efficiency of Charged Particle Registration with Crystal Scintillators
• DAMA Dark Matter Detection Compatible with Other Searches

Cited by in corpus (25)

• The Effective Field Theory of Dark Matter Direct Detection
• Exothermic Dark Matter
• Long-Range Forces in Direct Dark Matter Searches
• Dark Moments and the DAMA-CoGeNT Puzzle
• Complex Scalar Dark Matter vis-à-vis CoGeNT, DAMA/LIBRA and XENON100
• Light Magnetic Dark Matter in Direct Detection Searches
• Form Factor Dark Matter
• A possible indication of momentum-dependent asymmetric dark matter in the Sun
• The Cosmology of Composite Inelastic Dark Matter
• Luminous Dark Matter
• Light Dark Matter Anomalies After LUX
• Current and Future Constraints on Dark Matter from Prompt and Inverse-Compton Photon Emission in the Isotropic Diffuse Gamma-ray Background
• Dark Atoms and Puzzles of Dark Matter Searches
• Thermal conduction by dark matter with velocity and momentum-dependent cross-sections
• Generalised form factor dark matter in the Sun
• Discovering Asymmetric Dark Matter with Anti-Neutrinos
• Sterile neutrino dark matter, CDMS-II and a light Higgs boson
• Dipole-interacting Fermionic Dark Matter in positron, antiproton, and gamma-ray channels
• Direct Detection Anomalies in light of $Gaia$ Data
• Puzzles of Dark Matter - More Light on Dark Atoms?
• Prospect for UV observations from the Moon
• The dark atoms of dark matter
• Dark Atoms of the Universe: towards OHe nuclear physics
• Novel coincidence detection technique for precision measurement of neutron-capture-induced nuclear recoils
• A possible explanation for NuTeV's anomalous dimuon events