Cargando…
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...
Autor principal: | |
---|---|
Lenguaje: | eng |
Publicado: |
2014
|
Materias: | |
Acceso en línea: | https://dx.doi.org/10.22323/1.180.0072 http://cds.cern.ch/record/2025671 |
_version_ | 1780947191904337920 |
---|---|
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 |