Signatures of Spontaneous Breaking of R-Parity in Gluino Cascade Decays   at LHC
  We study the pattern of gluino cascade decays in a class of supersymmetric models where R-parity is spontaneously broken. We give a detailed discussion of the R-parity violating decays of the lightest neutralino, the second lightest neutralino and the lightest chargino. The multi-lepton and same-sign dilepton signal rates expected in these models are compared with those predicted in the Minimal Supersymmetric Standard Model. We show that these rates can be substantially enhanced in broken R-parity models. 
A. Bartl, W. Porod, F. de Campos, M.A. Garcia-Jareno, M.B. Magro,   J.W.F. Valle and W. Majerotto