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T: Fachverband Teilchenphysik

T 38: Gasgefüllte Detektoren II

T 38.8: Talk

Tuesday, March 20, 2018, 18:15–18:30, Z6 - SR 2.002

Latest developments in improving the specific energy loss measurement in the Transition Radiation Tracker (TRT) at ATLAS — Philip Bechtle, Klaus Desch, Christian Grefe, and •Philipp König — Universität Bonn

Particle identification (PID) is a crucial part for many analyses carried out at a particle physics experiment. One important observable for PID is the specific energy loss dE/dx. In addition, it is an interesting observable for searches for exotic particles as those particles can have a completely different energy loss behavior than known particles described in the Standard Model. In ATLAS, the dE/dx of charged particles is measured in the vertex detector and in the Transition Radiation Tracker TRT. The measurement of dE/dx in the TRT will be introduced and the latest improvements to this measurements will be discussed. In particular, this talk will focus on the measurement of dE/dx under different pile-up conditions, give an insight into different possible calibration techniques and discuss the separation of different particle types that can be achieved.