Candidates for Inelastic Dark Matter

Abstract

Although we have yet to determine whether the DAMA data represents a true discovery of new physics, among such interpretations inelastic dark matter (IDM) can match the energy spectrum of DAMA very well while not contradicting the results of other direct detection searches. In this paper we investigate the general properties that a viable IDM candidate must have and search for simple models that realize these properties in natural ways. We begin by determining the regions of IDM parameter space that are allowed by direct detection searches including DAMA, paying special attention to larger IDM masses. We observe that an inelastic dark matter candidate with electroweak interactions can naturally satisfy observational constraints while simultaneously yielding the correct thermal relic abundance. We comment on several other proposed dark matter explanations for the DAMA signal and demonstrate that one of the proposed alternatives -- elastic scattering of dark matter off electrons -- is strongly disfavored when the modulated and unmodulated DAMA spectral data are taken into account. We then outline the general essential features of IDM models in which inelastic scattering off nuclei is mediated by the exchange of a massive gauge boson, and construct natural models in the context of a warped extra dimension and supersymmetry.

44 pages, 6 figures, added references

References in corpus (14)

• Observation of an anomalous positron abundance in the cosmic radiation
• A Theory of Dark Matter
• Secluded WIMP Dark Matter
• First results from DAMA/LIBRA and the combined results with DAMA/NaI
• Evidence Of Dark Matter Annihilations In The WMAP Haze
• First limits on WIMP nuclear recoil signals in ZEPLIN-II: a two phase xenon detector for dark matter detection
• Investigating electron interacting dark matter
• DAMA and WIMP dark matter
• Minimal supergravity sneutrino dark matter and inverse seesaw neutrino masses
• The Little Randall-Sundrum Model at the Large Hadron Collider
• A Supersymmetric U(1)' Model with Multiple Dark Matters
• Dark matter and sub-GeV hidden U(1) in GMSB models
• TeV Scale Singlet Dark Matter
• Little Randall-Sundrum Model and a Multiply Warped Spacetime

Cited by in corpus (6)

• Kinetic Mixing as the Origin of Light Dark Scales
• Dipolar Dark Matter
• Nonabelian dark matter: models and constraints
• Capture of Inelastic Dark Matter in the Sun
• PAMELA, DAMA, INTEGRAL and Signatures of Metastable Excited WIMPs
• Warping the Universal Extra Dimensions