Measurement of the top quark mass in the all-jets final state at √s=13 TeV s = 13 TeV and combination with the lepton+jets channel
Name
Sirunyan2019_Article_MeasurementOfTheTopQuarkMassIn.pdf
Description
Published version
Size
826.99 KB
Format
Adobe PDF
Checksum (MD5)
6d58920c7150b33e3fa96f97f1014670
Author(s)
The CMS Collaboration
Date Issued
2019
Journal
The European Physical Journal C - Particles and Fields
Publisher
Springer Science and Business Media LLC
Version
Final published version
Abstract
© 2019, CERN for the benefit of the CMS collaboration. A top quark mass measurement is performed using 35.9fb-1 of LHC proton–proton collision data collected with the CMS detector at s=13TeV. The measurement uses the t t ¯ all-jets final state. A kinematic fit is performed to reconstruct the decay of the t t ¯ system and suppress the multijet background. Using the ideogram method, the top quark mass (m t ) is determined, simultaneously constraining an additional jet energy scale factor (JSF). The resulting value of mt=172.34±0.20(stat+JSF)±0.70(syst)GeV is in good agreement with previous measurements. In addition, a combined measurement that uses the t t ¯ lepton+jets and all-jets final states is presented, using the same mass extraction method, and provides an m t measurement of 172.26±0.07(stat+JSF)±0.61(syst)GeV. This is the first combined m t extraction from the lepton+jets and all-jets channels through a single likelihood function.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Creative Commons Attribution 4.0 International license
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1140/epjc/s10052-019-6788-2
