Heidelberg 2022 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 98: Experimental Methods (general) 4

T 98.2: Vortrag

Donnerstag, 24. März 2022, 16:35–16:50, T-H29

The characterisation of non collisions background events in the ATLAS detector during Run-2 data taking. — •Sergio Grancagnolo — Humboldt-Universität, Berlin, Germany

Understanding events from proton interactions with residual gas in the beam pipe, with collimators, or from cosmic rays is of primary importance to identify potential risk of damage to the accelerator and experiments. In addition, these events represent one of the main background on non-conventional physics signatures based on tracks not pointing to the interaction point, out-of-time energy deposits, or displaced decay vertices might come from signals released by long-living heavy particles. The characteristics of these non-collision backgrounds are illustrated in detail in order to identify, estimate and reject them by using all the ATLAS detector.