Inelastic Dark Matter

Details Inelastic Dark Matter Inelastic Dark Matter

2001-01-15

arxiv.org/abs/hep-ph/0101138v1

Phys.Rev.D64:043502,2001

Physics

High Energy Physics

High Energy Physics - Phenomenology

20 pages, 6 figures

Scientific paper

10.1103/PhysRevD.64.043502

Many observations suggest that much of the matter of the universe is non-baryonic. Recently, the DAMA NaI dark matter direct detection experiment reported an annual modulation in their event rate consistent with a WIMP relic. However, the Cryogenic Dark Matter Search (CDMS) Ge experiment excludes most of the region preferred by DAMA. We demonstrate that if the dark matter can only scatter by making a transition to a slightly heavier state (Delta m ~ 100kev), the experiments are no longer in conflict. Moreover, differences in the energy spectrum of nuclear recoil events could distinguish such a scenario from the standard WIMP scenario. Finally, we discuss the sneutrino as a candidate for inelastic dark matter in supersymmetric theories.

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