Bonn 2020 – scientific programme

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T: Fachverband Teilchenphysik

T 97: Drell-Yan and jet production

T 97.7: Talk

Friday, April 3, 2020, 12:30–12:45, H-HS XI

Jet Mass Calibration — •Steffen Albrecht, Andreas Hinzmann, Roman Kogler, and Dennis Schwarz — Universität Hamburg

In this talk, a technique for calibrating the mass of (fat) jets will be presented. In the analysis of hadronic final states, the resolution and the scale of the jet mass can be an important source for the systematic uncertainties. Therefore an improvement of its measurement will benefit many of these analyses.

Using scales of jet constituents of different categories (e.g. charged hadronic, neutral hadronic) as nuisance parameters in a template fit of the jet mass in several regions to data, one can learn about their influence on the jet mass shape and normalisation.

The presented analysis considers processes with W+jets in the final state, where the boson has a large transverse momentum (high Lorentz boost) and thus produces strongly collimated decay products, which are reconstructed as a single fat jet.