Searches for Heavy Long-Lived Sleptons and R-hadrons with the ATLAS detector in pp collisions at sqrt(s) = 7 TeV

A search for long-lived particles is performed using a data sample of 4.7 fb-1 from pp collisions at sqrt(s) = 7 TeV collected by the ATLAS detector at the LHC. No excess is observed above the estimated background and upper limits, at 95% CL, are set on the mass of the long-lived particles in di erent scenarios, based on their possible interactions in the inner detector, the calorimeters and the muon spectrometer. long-lived staus in gauge-mediated SUSY breaking models are excluded up to a mass of 300 GeV for tan beta = 5 - 20. Directly produced long-lived sleptons are excluded up to a mass of 278 GeV. Gluino (stop, sbottom) R-hadrons in a generic interaction model are excluded up to a mass of 985 GeV (683 GeV, 612 GeV) respectively. Limits are also obtained for R-hadrons with a few ns lifetimes and on R-hadrons that do not reach the muon spectrometer or are neutral when they reach it.