Search for heavy long lived sleptons with ATLAS at $\sqrt{s}$ = 8 TeV

A search for long-lived sleptons has been performed on a data sample of 15.9 fb$^{−1}$ of p-p collisions at a center of mass energy of $\sqrt{s}$ = 8 TeV collected by the ATLAS detector at LHC in 2012. Long-lived sleptons are expected to interact as if they were heavy muons, charge and penetrating. Results are interpreted in the context of gauge-mediated supersymmetry breaking (GMSB) models the $\tilde{\tau}_{1}$, supersymmetric partner of the $\tau$ lepton, is the next to lightest supersymmetric particle and decays outside the ATLAS volume. No excess is observed above the estimated background, therefore lower limits, at 95% confidence level, are set on the mass of the long-lived sleptons.