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Top quark production measurements using the ATLAS detector at the LHC

Measurements of the inclusive top quark production cross sections in proton-proton collisions with the ATLAS detector at the Large Hadron Collider are presented. The most precise pair production cross section result requires opposite sign electrons and muons and uses the full data-set at a centre-of...

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Autor principal: Salamanna, Giuseppe
Lenguaje:eng
Publicado: 2016
Materias:
Acceso en línea:http://cds.cern.ch/record/2126329
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author Salamanna, Giuseppe
author_facet Salamanna, Giuseppe
author_sort Salamanna, Giuseppe
collection CERN
description Measurements of the inclusive top quark production cross sections in proton-proton collisions with the ATLAS detector at the Large Hadron Collider are presented. The most precise pair production cross section result requires opposite sign electrons and muons and uses the full data-set at a centre-of-mass energy of 7 and 8 TeV. The first measurements of the ttbar production cross-section at 13 TeV are also presented, using both the dilepton and lepton-plus-jets signatures. Differential measurements of the top transverse momentum and kinematic properties of the top-anti-top pair at 8 TeV are discussed. These measurements, including results using boosted tops, probe our understanding of top pair production in the TeV regime. The results, unfolded to particle and parton level, are compared to recent Monte Carlo generators implementing LO and NLO matrix elements matched with parton showers and NLO QCD calculations. In addition, the production of top quark pairs in association with vector bosons and additional jets are discussed. These processes are important backgrounds to many new physics searches and the results are compared to the Standard Model predictions.
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institution Organización Europea para la Investigación Nuclear
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publishDate 2016
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spelling cern-21263292019-09-30T06:29:59Zhttp://cds.cern.ch/record/2126329engSalamanna, GiuseppeTop quark production measurements using the ATLAS detector at the LHCParticle Physics - ExperimentMeasurements of the inclusive top quark production cross sections in proton-proton collisions with the ATLAS detector at the Large Hadron Collider are presented. The most precise pair production cross section result requires opposite sign electrons and muons and uses the full data-set at a centre-of-mass energy of 7 and 8 TeV. The first measurements of the ttbar production cross-section at 13 TeV are also presented, using both the dilepton and lepton-plus-jets signatures. Differential measurements of the top transverse momentum and kinematic properties of the top-anti-top pair at 8 TeV are discussed. These measurements, including results using boosted tops, probe our understanding of top pair production in the TeV regime. The results, unfolded to particle and parton level, are compared to recent Monte Carlo generators implementing LO and NLO matrix elements matched with parton showers and NLO QCD calculations. In addition, the production of top quark pairs in association with vector bosons and additional jets are discussed. These processes are important backgrounds to many new physics searches and the results are compared to the Standard Model predictions.ATL-PHYS-SLIDE-2016-033oai:cds.cern.ch:21263292016-01-24
spellingShingle Particle Physics - Experiment
Salamanna, Giuseppe
Top quark production measurements using the ATLAS detector at the LHC
title Top quark production measurements using the ATLAS detector at the LHC
title_full Top quark production measurements using the ATLAS detector at the LHC
title_fullStr Top quark production measurements using the ATLAS detector at the LHC
title_full_unstemmed Top quark production measurements using the ATLAS detector at the LHC
title_short Top quark production measurements using the ATLAS detector at the LHC
title_sort top quark production measurements using the atlas detector at the lhc
topic Particle Physics - Experiment
url http://cds.cern.ch/record/2126329
work_keys_str_mv AT salamannagiuseppe topquarkproductionmeasurementsusingtheatlasdetectoratthelhc