Physics and Astronomy, Department of
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Document Type
Article
Date of this Version
9-16-2023
Citation
Eur. Phys. J. C (2023) 83:963 https://doi.org/10.1140/epjc/s10052-023-12050-4
Abstract
The mass of the top quark is measured in 36.3 fb−1 of LHC proton–proton collision data collected with the CMS detector at √ s = 13 TeV. The measurement uses a sample of top quark pair candidate events containing one isolated electron or muon and at least four jets in the final state. For each event, the mass is reconstructed from a kinematic fit of the decay products to a top quark pair hypothesis. A profile likelihood method is applied using up to four observables per event to extract the top quark mass. The top quark mass is measured to be 171.77 ± 0.37 GeV. This approach significantly improves the precision over previous measurements.
Comments
Open access.