A measurement of the cross section of the associated production of a single top quark and a W boson in final states with a muon or electron and jets in proton-proton collisions at s = 13 TeV is presented. The data correspond to an integrated luminosity of 36 fb−1 collected with the CMS detector at the CERN LHC in 2016. A boosted decision tree is used to separate the tW signal from the dominant tt ¯ background, whilst the subleading W+jets and multijet backgrounds are constrained using data-based estimates. This result is the first observation of the tW process in final states containing a muon or electron and jets, with a significance exceeding 5 standard deviations. The cross section is determined to be 89 ± 4 (stat) ± 12 (syst) pb, consistent with the standard model. [Figure not available: see fulltext.]

Tumasyan, A., Adam, W., Andrejkovic, J., Bergauer, T., Chatterjee, S., Dragicevic, M., et al. (2021). Observation of tW production in the single-lepton channel in pp collisions at √s = 13 TeV. JOURNAL OF HIGH ENERGY PHYSICS, 2021(11) [10.1007/JHEP11(2021)111].

Observation of tW production in the single-lepton channel in pp collisions at √s = 13 TeV

Benaglia A.;Brivio F.;Cetorelli F.;Ciriolo V.;De Guio F.;Dinardo M. E.;Ghezzi A.;Govoni P.;Guzzi L.;Malberti M.;Massironi A.;Moroni L.;Paganoni M.;Ragazzi S.;Tabarelli de Fatis T.;Valsecchi D.;Zuolo D.;Ortona G.;Gerosa R.;Lucchini M. T.;
2021

Abstract

A measurement of the cross section of the associated production of a single top quark and a W boson in final states with a muon or electron and jets in proton-proton collisions at s = 13 TeV is presented. The data correspond to an integrated luminosity of 36 fb−1 collected with the CMS detector at the CERN LHC in 2016. A boosted decision tree is used to separate the tW signal from the dominant tt ¯ background, whilst the subleading W+jets and multijet backgrounds are constrained using data-based estimates. This result is the first observation of the tW process in final states containing a muon or electron and jets, with a significance exceeding 5 standard deviations. The cross section is determined to be 89 ± 4 (stat) ± 12 (syst) pb, consistent with the standard model. [Figure not available: see fulltext.]
Articolo in rivista - Articolo scientifico
Hadron-Hadron scattering (experiments); Top physics;
English
2021
2021
11
111
none
Tumasyan, A., Adam, W., Andrejkovic, J., Bergauer, T., Chatterjee, S., Dragicevic, M., et al. (2021). Observation of tW production in the single-lepton channel in pp collisions at √s = 13 TeV. JOURNAL OF HIGH ENERGY PHYSICS, 2021(11) [10.1007/JHEP11(2021)111].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/472358
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