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T: Fachverband Teilchenphysik

T 65: Experimental methods III

T 65.5: Vortrag

Mittwoch, 17. März 2021, 17:00–17:15, To

Non-collision Backgrounds in ATLAS — •Sergio Grancagnolo — Humboldt-Universität zu Berlin

Understanding events from proton interactions with residual gas in the beam pipe, with collimators, or from cosmic rays is of primary importance to evaluate backgrounds on non-conventional physics signatures, usually based on the primary interaction point. As an example, tracks not pointing to it, out-of-time energy deposits, or displaced decay vertices might come from signals released by long-living heavy particles, introduced by several extensions of the standard model. Last improvements in the characterization of backgrounds not coming from beam collisions will be illustrated.