Aachen 2019 – scientific programme
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T: Fachverband Teilchenphysik
T 65: Experimentelle Methoden II
T 65.5: Talk
Wednesday, March 27, 2019, 17:00–17:15, S01
Calibration of the measured pTmiss recoil of CMS using MVA regression techniques — Artur Gottmann1, Tanja Kopf1, Günter Quast1, Roger Wolf1, and •Stefan Wunsch1,2 — 1Karlsruhe Institute of Technology — 2CERN
The measured pTmiss is a sum of genuine pTmiss, carried e.g. by neutrinos, emerging from a high energy physics collision and miss measurements of the pTmiss recoil in the detector. A calibration method of the pTmiss recoil is performed to minimize the resolution of the measured pTmiss. 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 pTmiss. The calibrated recoil in turn can be used as an estimator of the genuine pTmiss for events with resonances, where a recoil can be defined. The application on W+Jets events will be presented.