Ph.D Thesis
Ph.D Student Bressler Shikma Searching for a Heavy Long-lived Charged Particles with the ATLAS detector in PP Collisions at sqrt(S)=7TeV Department of Physics Professor Shlomit Tarem

Abstract

A search for long-lived charged particles reaching the muon spectrometer is performed using a data sample of 37 pb-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.

Stable tau sleptons are excluded at 95% CL up to a mass of 136 GeV, in GMSB models with N_5 = 3, m_messenger = 250 TeV, mu > 0 and tan(beta) = 5. Electroweak production of sleptons is excluded up to a mass of 110 GeV.

Gluino R-hadrons in a generic interaction model are excluded up to masses of 530 GeV to 544 GeV depending on the fraction of R-hadrons produced as gluino-balls.