Using the Energy Spectrum at DAMA/LIBRA to Probe Light Dark Matter

Abstract

A weakly interacting massive particle (WIMP) weighing only a few GeV has been invoked as an explanation for the signal from the DAMA/LIBRA experiment. We show that the data from DAMA/LIBRA are now powerful enough to strongly constrain the properties of any putative WIMP. Accounting for the detailed recoil spectrum, a light WIMP with a Maxwellian velocity distribution and a spin-independent (SI) interaction cannot account for the data. Even neglecting the spectrum, much of the parameter space is excluded by limits from the DAMA unmodulated signal at low energies. Significant modifications to the astrophysics or particle physics can open light mass windows.

5 pages, 5 figures

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• Integrating Out Astrophysical Uncertainties
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• Implications of CoGeNT and DAMA for Light WIMP Dark Matter
• Toward (Finally!) Ruling Out Z and Higgs Mediated Dark Matter Models
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• Global interpretation of direct Dark Matter searches after CDMS-II results
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• Inelastic Dark Matter and DAMA/LIBRA: An Experimentum Crucis
• Dark Matter implications of DAMA/LIBRA-phase2 results
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• Compatibility of DAMA/LIBRA dark matter detection with other searches in light of new Galactic rotation velocity measurements
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• Dark Matter-Motivated Searches for Exotic 4th Generation Quarks in Tevatron and Early LHC Data
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• Impure Thoughts on Inelastic Dark Matter
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• On the annual modulation signal in dark matter direct detection
• Direct detection of WIMPs : Implications of a self-consistent truncated isothermal model of the Milky Way's dark matter halo
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• Parity Violation in Composite Inelastic Dark Matter Models
• Digging for Dark Matter: Spectral Analysis and Discovery Potential of Paleo-Detectors
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• A light neutralino in hybrid models of supersymmetry breaking
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• Light Dark Matter Detection Prospects at Neutrino Experiments
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• Lowering the Threshold in the DAMA Dark Matter Search
• Halo-independent tests of dark matter annual modulation signals
• Is light neutralino as dark matter still viable?
• Examining the time dependence of DAMA's modulation amplitude
• Reflections on the search for particle dark matter by direct experiments