2018/12/13 by J. Lange, Johannes Lange, Lange, Johannes
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex
paper · pdf · doi:10.48550/arxiv.1812.05394
Presented at 11$^\text{th}$ International Workshop on Top Quark Physics, Bad Neuenahr, Germany, September 16-21, 2018
arxiv created 2018/12/13 · arxiv updated 2018/12/14
The top quark mass is measured using 35.9~fb-1 of LHC proton-proton collision data collected with the CMS detector at √(s)=13~TeV in 2016. The measurement uses the tt all-jets final state, which comprises a total of six jets. A kinematic fit is performed to reconstruct the decay of the tt system and suppress QCD multijet background. By means of the ideogram method, the top quark mass is determined, simultaneously constraining an additional jet energy scale factor (JSF). The result of 172.34±0.20 (stat+JSF)±0.76 (syst)~GeV for the top quark mass is in good agreement with previous measurements in the same and different final states.