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We describe two natural scenarios in which both dark matter WIMPs (weaklyinteracting massive particles) and a variety of supersymmetric partners shouldbe discovered in the foreseeable future. In the first scenario, the WIMPs areneutralinos, but they are only one component of the dark matter, which isdominantly composed of other relic particles such as axions. (This is themulticomponent model of Baer, Barger, Sengupta, and Tata.) In the secondscenario, the WIMPs result from an extended Higgs sector and may be the onlydark matter component. In either scenario, both the dark matter WIMP and aplethora of other neutral and charged particles await discovery at manyexperimental facilities. The new particles in the second scenario have farweaker cross-sections for direct and indirect detection via their gaugeinteractions, which are either momentum-dependent or second-order. However, aswe point out here, they should have much stronger interactions via the Higgs.We estimate that their interactions with fermions will then be comparable to(although not equal to) those of neutralinos with a corresponding Higgsinteraction. It follows that these newly proposed dark matter particles shouldbe within reach of emerging and proposed facilities for direct, indirect, andcollider-based detection.

Two natural scenarios for dark matter particles coexisting with supersymmetry