Resonant sneutrino production in Supersymmetry with R-parity violation at the LHC

Abstract

The resonant production of sneutrinos at the LHC via the R-parity violating couplings \l '_{ijk} L_i Q_j D^c_k is studied through its three-leptons signature. A detailed particle level study of signal and background is performed using a fast simulation of the ATLAS detector. Through the full reconstruction of the cascade decay, a model-independent and precise measurement of the masses of the involved sparticles can be performed. Besides, this signature can be detected for a broad class of supersymmetric models, and for a wide range of values of several \l '_{ijk} coupling constants. Within the MSSM, the production of a 900 GeV sneutrino for $\lambda^{\prime}_{211}>0.05$, and of a 350 GeV sneutrino for $\lambda^{\prime}_{211}>0.01$ can be observed within the first three years of LHC running.Comment: 33 pages, 19 figures, Latex fil