Aachen 2019 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 65: Experimentelle Methoden II

T 65.5: Vortrag

Mittwoch, 27. März 2019, 17:00–17:15, S01

Calibration of the measured p_T^miss recoil of CMS using MVA regression techniques — Artur Gottmann¹, Tanja Kopf¹, Günter Quast¹, Roger Wolf¹, and •Stefan Wunsch^1,2 — ¹Karlsruhe Institute of Technology — ²CERN

The measured p_T^miss is a sum of genuine p_T^miss, carried e.g. by neutrinos, emerging from a high energy physics collision and miss measurements of the p_T^miss recoil in the detector. A calibration method of the p_T^miss recoil is performed to minimize the resolution of the measured p_T^miss. This calibration is formulated as an MVA regression task. It is obtained from Z→µµ events in data which can be assumed to be free of genuine p_T^miss. The calibrated recoil in turn can be used as an estimator of the genuine p_T^miss for events with resonances, where a recoil can be defined. The application on W+Jets events will be presented.