Studies of catastrophic muon energy losses in ATLAS H8 combined Testbeam data

Abstract

Studies of catastrophic muon energy losses were performed during the combined run period in the CERN H8 Testbeam experimental area where approximately one octant of the ATLAS muon spectrometer was installed along with parts from the Inner Detector and the Electromagnetic and Hadronic calorimeters. Muon tracks reconstructed in the muon spectrometer were associated with the energy deposited in the electromagnetic Liquid Argon and the hadronic Tile calorimeters. On this basis, muons were separated from pions that contaminated the beam and muons with catastrophic energy losses were identified. The measured probability of muons to suffer such a loss was compared to results from Monte Carlo expectations.