A measurement of the top quark pole mass m pole t in events where a top quarkantiquark pair (t¯t) is produced in association with at least one additional jet (t¯t+jet) is presented. This analysis is performed using proton-proton collision data at √ s = 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-sign leptons in the final state (e+ e − , µ + µ − , e ± µ ∓ ) are analyzed. The reconstruction of the main observable and the event classification are optimized using multivariate analysis techniques based on machine learning. The production cross section is measured as a function of the inverse of the invariant mass of the t¯t+jet system at the parton level using a maximum likelihood unfolding. Given a reference parton distribution function (PDF), the top quark pole mass is extracted using the theoretical predictions at next-to-leading order. For the ABMP16NLO PDF, this results in m pole t = 172.93 ± 1.36 GeV.

Tumasyan, A., Adam, W., Andrejkovic, J.W., Bergauer, T., Chatterjee, S., Damanakis, K., et al. (2023). Measurement of the top quark pole mass using t¯t+jet events in the dilepton final state in proton-proton collisions at √s = 13 TeV. JOURNAL OF HIGH ENERGY PHYSICS, 2023(7), 0-56 [10.1007/JHEP07(2023)077].

Measurement of the top quark pole mass using t¯t+jet events in the dilepton final state in proton-proton collisions at √s = 13 TeV

Battilana, C.;Bonacorsi, D.;Borgonovi, L.;Castro, A.;Cuffiani, M.;Diotalevi, T.;Fanfani, A.;Giommi, L.;Guiducci, L.;Lunerti, L.;Rovelli, T.;Siroli, G. P.;
2023

Abstract

A measurement of the top quark pole mass m pole t in events where a top quarkantiquark pair (t¯t) is produced in association with at least one additional jet (t¯t+jet) is presented. This analysis is performed using proton-proton collision data at √ s = 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-sign leptons in the final state (e+ e − , µ + µ − , e ± µ ∓ ) are analyzed. The reconstruction of the main observable and the event classification are optimized using multivariate analysis techniques based on machine learning. The production cross section is measured as a function of the inverse of the invariant mass of the t¯t+jet system at the parton level using a maximum likelihood unfolding. Given a reference parton distribution function (PDF), the top quark pole mass is extracted using the theoretical predictions at next-to-leading order. For the ABMP16NLO PDF, this results in m pole t = 172.93 ± 1.36 GeV.
2023
Tumasyan, A., Adam, W., Andrejkovic, J.W., Bergauer, T., Chatterjee, S., Damanakis, K., et al. (2023). Measurement of the top quark pole mass using t¯t+jet events in the dilepton final state in proton-proton collisions at √s = 13 TeV. JOURNAL OF HIGH ENERGY PHYSICS, 2023(7), 0-56 [10.1007/JHEP07(2023)077].
Tumasyan, A.; Adam, W.; Andrejkovic, J. W.; Bergauer, T.; Chatterjee, S.; Damanakis, K.; Dragicevic, M.; Escalante Del Valle, A.; Hussain, P. S.; Jeit...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/954035
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