Study of the determination of the SUGRA parameters using the ATLAS detector in the case of L-violating R parity breaking

Simulating pp collisions at LHC energies in the framework of the SUGRA model and the detection of the produced leptons and jets by ATLAS we demonstrate that a clean signature of SUSY can be obtained over a large domain of the parameter space in the case of L-violating R parity breaking (lambda couplings). The obtained signal allows the reconstruction of the SUSY particles and thereby the precise determination of the model parameters m0, m1/2, tan(beta) and sign(mu).