The mass of the top quark is measured using a sample of t t ¯ events collected by the CMS detector using proton-proton collisions at s=13TeV at the CERN LHC. Events are selected with one isolated muon or electron and at least four jets from data corresponding to an integrated luminosity of 35.9fb-1. For each event the mass is reconstructed from a kinematic fit of the decay products to a t t ¯ hypothesis. Using the ideogram method, the top quark mass is determined simultaneously with an overall jet energy scale factor (JSF), constrained by the mass of the W boson in q q ¯ ′ decays. The measurement is calibrated on samples simulated at next-to-leading order matched to a leading-order parton shower. The top quark mass is found to be 172.25±0.08(stat+JSF)±0.62(syst)GeV. The dependence of this result on the kinematic properties of the event is studied and compared to predictions of different models of t t ¯ production, and no indications of a bias in the measurements are observed.

Sirunyan, A., Tumasyan, A., Adam, W., Ambrogi, F., Asilar, E., Bergauer, T., et al. (2018). Measurement of the top quark mass with lepton+jets final states using p p collisions at √s=13TeV. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 78(11) [10.1140/epjc/s10052-018-6332-9].

Measurement of the top quark mass with lepton+jets final states using p p collisions at √s=13TeV

Benaglia A.;Beschi A.;Brianza L.;Brivio F.;Ciriolo V.;Dinardo M. E.;Fiorendi S.;Ghezzi A.;Govoni P.;Malberti M.;Manzoni R. A.;Moroni L.;Paganoni M.;Pigazzini S.;Ragazzi S.;de Fatis T. T.;Lucchini M. T.;Gerosa R.;Massironi A.;De Guio F.;
2018

Abstract

The mass of the top quark is measured using a sample of t t ¯ events collected by the CMS detector using proton-proton collisions at s=13TeV at the CERN LHC. Events are selected with one isolated muon or electron and at least four jets from data corresponding to an integrated luminosity of 35.9fb-1. For each event the mass is reconstructed from a kinematic fit of the decay products to a t t ¯ hypothesis. Using the ideogram method, the top quark mass is determined simultaneously with an overall jet energy scale factor (JSF), constrained by the mass of the W boson in q q ¯ ′ decays. The measurement is calibrated on samples simulated at next-to-leading order matched to a leading-order parton shower. The top quark mass is found to be 172.25±0.08(stat+JSF)±0.62(syst)GeV. The dependence of this result on the kinematic properties of the event is studied and compared to predictions of different models of t t ¯ production, and no indications of a bias in the measurements are observed.
Articolo in rivista - Articolo scientifico
top quark mass; lepton+jets final states;
English
2018
78
11
891
none
Sirunyan, A., Tumasyan, A., Adam, W., Ambrogi, F., Asilar, E., Bergauer, T., et al. (2018). Measurement of the top quark mass with lepton+jets final states using p p collisions at √s=13TeV. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 78(11) [10.1140/epjc/s10052-018-6332-9].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/319260
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