NMSSM in disguise: discovering singlino dark matter with soft leptons at   the LHC
  We suggest an NMSSM scenario, motivated by dark matter constraints, that may disguise itself as a much simpler mSUGRA scenario at the LHC. We show how its non-minimal nature can be revealed, and the bino--singlino mass difference measured, by looking for soft leptons. 
S. Kraml, A.R. Raklev and M.J. White