Collider Signatures of SuperWIMP Warm Dark Matter
  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. 
Jose A. R. Cembranos, Jonathan L. Feng, Arvind Rajaraman, Bryan T.   Smith, Fumihiro Takayama