Karlsruhe 2024 – scientific programme
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T: Fachverband Teilchenphysik
T 55: Methods in particle physics 4 (HCAL, jets)
T 55.3: Talk
Wednesday, March 6, 2024, 16:30–16:45, Geb. 20.30: 2.066
Novel techniques for measuring the jet energy resolution from dijet events at CMS — •Yannick Fischer1, Johannes Haller1, Andrea Malara2, Alexander Paasch1, Daniel Savoiu1, and Matthias Schröder1 — 1Institut für Experimentalphysik, Universität Hamburg — 2Université libre de Bruxelles
The jet energy is a key observable in almost all analyses of the CMS experiment at the LHC, and hence, precise knowledge of the jet energy resolution (JER) is crucial for both measurements and searches. In this talk, a brief overview of the basic concept and the techniques used at CMS to measure the JER from dijet events will be given. Then, a new method will be introduced, based on the missing transverse momentum fraction. Latest results with recent CMS data will be shown. Finally, the implementation of the JER measurement in a new, columnar-based framework will be discussed, and the advantages of this framework for the measurement of the JER will be highlighted.
Keywords: Calibration; Jets; JER; Resolution