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.

Tumasyan A., Adam W., Andrejkovic J.W., 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), 0-39 [10.1007/JHEP11(2021)111].

Observation of tW production in the single-lepton channel in pp 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.;Primavera F.;Rovelli T.;Siroli G. P.;
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.
2021
Tumasyan A., Adam W., Andrejkovic J.W., 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), 0-39 [10.1007/JHEP11(2021)111].
Tumasyan A.; Adam W.; Andrejkovic J.W.; Bergauer T.; Chatterjee S.; Dragicevic M.; Escalante Del Valle A.; Fruhwirth R.; Jeitler M.; Krammer N.; Lechn...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/862217
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