  SuperWeakly-Interacting Massive Particles (superWIMPs) produced in the late
decays of other particles are well-motivated dark matter candidates and may be
favored over standard Weakly-Interacting Massive Particles (WIMPs) by small
scale structure observations. Among the most promising frameworks that
incorporate superWIMPs are R-parity conserving supersymmetry models in which
the lightest supersymmetric particle (LSP) is the gravitino or the axino. In
these well-defined particle models, astrophysical observations have direct
implications for possible measurements at future colliders.
