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First observation of W associated single top (tW) production in proton-proton collisions at 8 TeV

The first observation of the associated production of a single top quark and a W boson in proton-proton collisions at p s = 8 TeV with the CMS experiment at the LHC is presented. The data correspond to an integrated luminosity of 12.2 fb-1. The measurement is performed using events with two leptons...

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Detalles Bibliográficos
Autor principal: Benelli, Gabriele
Lenguaje:eng
Publicado: 2014
Materias:
Acceso en línea:https://dx.doi.org/10.22323/1.180.0072
http://cds.cern.ch/record/2025671
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author Benelli, Gabriele
author_facet Benelli, Gabriele
author_sort Benelli, Gabriele
collection CERN
description The first observation of the associated production of a single top quark and a W boson in proton-proton collisions at p s = 8 TeV with the CMS experiment at the LHC is presented. The data correspond to an integrated luminosity of 12.2 fb-1. The measurement is performed using events with two leptons and a jet originated from a b quark. A multivariate analysis based on kinematic properties is used to separate the signal from the t ̄ t background. The signal is observed with a 6.0 standard deviation excess above a background only hypothesis. A production cross section of 23 : 4 + 5 : 5 pb is measured, in agreement with the standard model expectation of 22 : 2 1 : 5 pb
id oai-inspirehep.net-1290906
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2014
record_format invenio
spelling oai-inspirehep.net-12909062019-09-30T06:29:59Zdoi:10.22323/1.180.0072http://cds.cern.ch/record/2025671engBenelli, GabrieleFirst observation of W associated single top (tW) production in proton-proton collisions at 8 TeVParticle Physics - ExperimentThe first observation of the associated production of a single top quark and a W boson in proton-proton collisions at p s = 8 TeV with the CMS experiment at the LHC is presented. The data correspond to an integrated luminosity of 12.2 fb-1. The measurement is performed using events with two leptons and a jet originated from a b quark. A multivariate analysis based on kinematic properties is used to separate the signal from the t ̄ t background. The signal is observed with a 6.0 standard deviation excess above a background only hypothesis. A production cross section of 23 : 4 + 5 : 5 pb is measured, in agreement with the standard model expectation of 22 : 2 1 : 5 pboai:inspirehep.net:12909062014
spellingShingle Particle Physics - Experiment
Benelli, Gabriele
First observation of W associated single top (tW) production in proton-proton collisions at 8 TeV
title First observation of W associated single top (tW) production in proton-proton collisions at 8 TeV
title_full First observation of W associated single top (tW) production in proton-proton collisions at 8 TeV
title_fullStr First observation of W associated single top (tW) production in proton-proton collisions at 8 TeV
title_full_unstemmed First observation of W associated single top (tW) production in proton-proton collisions at 8 TeV
title_short First observation of W associated single top (tW) production in proton-proton collisions at 8 TeV
title_sort first observation of w associated single top (tw) production in proton-proton collisions at 8 tev
topic Particle Physics - Experiment
url https://dx.doi.org/10.22323/1.180.0072
http://cds.cern.ch/record/2025671
work_keys_str_mv AT benelligabriele firstobservationofwassociatedsingletoptwproductioninprotonprotoncollisionsat8tev