Searches for heavy long-lived charged particles with the ATLAS detector in proton-proton collisions at root s=8 TeV

Searches for heavy long-lived charged particles are performed using a datasample of 19.1 fb−1from proton-proton collisions at a centre-of-mass energy of√s= 8 TeVcollected by the ATLAS detector at the Large Hadron Collider. No excess is observed abovethe estimated background and limits are placed on the mass of long-lived particles in varioussupersymmetric models. Long-lived tau sleptons in models with gauge-mediated symmetrybreaking are excluded up to masses between 440 and 385 GeV for tanβbetween 10 and 50,with a 290 GeV limit in the case where only direct tau slepton production is considered.In the context of simplified LeptoSUSY models, where sleptons are stable and have a massof 300 GeV, squark and gluino masses are excluded up to a mass of 1500 and 1360 GeV,respectively. Directly produced charginos, in simplified models where they are nearly de-generate to the lightest neutralino, are excluded up to a mass of 620 GeV.R-hadrons,composites containing a gluino, bottom squark or top squark, are excluded up to a mass of1270, 845 and 900 GeV, respectively, using the full detector; and up to a mass of 1260, 835and 870 GeV using an approach disregarding information from the muon spectrometer.