Jul 6 – 13, 2022
Bologna, Italy
Europe/Rome timezone

Measurement of the top quark pole mass using ttbar+jet events in the dilepton final state at 13 TeV

Jul 8, 2022, 7:05 PM
1h 25m
Bologna, Italy

Bologna, Italy

Palazzo della Cultura e dei Congressi
Poster Top quark and EW Physics Poster Session


Sebastian Wuchterl


A measurement of the top quark pole mass in events where a top quark-antiquark pair ($\text{t}\overline{\text{t}}$) is produced in association with one additional jet is presented. This analysis is performed using proton-proton collision data at 13 TeV collected by the CMS experiment at the CERN LHC, corresponding to a total integrated luminosity of 36.3 fb$^{-1}$. Events with two opposite charge leptons in the final state (ee, $\mu\mu$, e$\mu$) are analyzed. Using multivariate analysis techniques based on machine learning, the reconstruction of the main observable and the event selection are optimized. The production cross section is measured as a function of the inverse of the invariant mass of the $\text{t}\overline{\text{t}}$+jet system at the parton level, using a maximum likelihood unfolding. The top quark pole mass is extracted using the theory predictions at next-to-leading order.

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