Like-sign dilepton signature for gluino production at LHC including top quark and higgs boson effects

A systematic analysis of the like-sign dipleton signature for gluino production at LHC is performed in the $R$-conserving minimal supersymmetric standard model, taking into account the top quark and Higgs boson effects in the cascade decay. We consider two representative values of the gluino mass, 300 and 800 GeV, along with those of the other SUSY parameters. While the top quark contribution is kinematically suppressed for the former case it is very import for the latter. Ways of separating the signal from the background are discussed. One expects a viable LSD signals upto a gluino mass of $\sim 800$ (1200) GeV at the low (high) luminosity option of LHC over practically the full parameter space of MSSM.