Abstract
We consider the possibility that the DAMA signal arises from channeled events in simple models where the dark matter interaction with nuclei issuppressed 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 energythreshold type of parameter. We find that they can be consistentwith 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 DAMAmuch more compelling.
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