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Measurements of multijet production cross sections in proton-proton collisions at 7 TeV center-of-mass energy with the ATLAS Detector

Inclusive multijet production has been studied with the ATLAS detector in proton-proton collisions at a center-of-mass energy of 7 TeV, using an integrated luminosity of 17 nb$^{-1}$. The anti-$k_t$ algorithm with distance parameter $R=0.6$ is used to identify jets. The inclusive multijet cross sect...

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Autor principal: The ATLAS collaboration
Lenguaje:eng
Publicado: 2010
Materias:
Acceso en línea:http://cds.cern.ch/record/1298854
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author The ATLAS collaboration
author_facet The ATLAS collaboration
author_sort The ATLAS collaboration
collection CERN
description Inclusive multijet production has been studied with the ATLAS detector in proton-proton collisions at a center-of-mass energy of 7 TeV, using an integrated luminosity of 17 nb$^{-1}$. The anti-$k_t$ algorithm with distance parameter $R=0.6$ is used to identify jets. The inclusive multijet cross section is measured, as well as the ratio of cross sections for inclusive production of $n-1$ and $n$ jets for $n\leq 6$. The differential cross sections of the first, second, third and fourth leading jets as a function of transverse momentum, and the differential cross section as a function of the scalar sum of the $p_T$ of selected jets, $H_T$, for different jet multiplicities are presented. The ratio of the differential cross section as a function of $H_T$ for 3-jet and 2-jet events is also measured. The results are compared to expectations based on leading order QCD, which agree with the data.
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institution Organización Europea para la Investigación Nuclear
language eng
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spelling cern-12988542021-04-18T19:36:56Zhttp://cds.cern.ch/record/1298854engThe ATLAS collaborationMeasurements of multijet production cross sections in proton-proton collisions at 7 TeV center-of-mass energy with the ATLAS DetectorDetectors and Experimental TechniquesInclusive multijet production has been studied with the ATLAS detector in proton-proton collisions at a center-of-mass energy of 7 TeV, using an integrated luminosity of 17 nb$^{-1}$. The anti-$k_t$ algorithm with distance parameter $R=0.6$ is used to identify jets. The inclusive multijet cross section is measured, as well as the ratio of cross sections for inclusive production of $n-1$ and $n$ jets for $n\leq 6$. The differential cross sections of the first, second, third and fourth leading jets as a function of transverse momentum, and the differential cross section as a function of the scalar sum of the $p_T$ of selected jets, $H_T$, for different jet multiplicities are presented. The ratio of the differential cross section as a function of $H_T$ for 3-jet and 2-jet events is also measured. The results are compared to expectations based on leading order QCD, which agree with the data.ATLAS-CONF-2010-084oai:cds.cern.ch:12988542010-10-11
spellingShingle Detectors and Experimental Techniques
The ATLAS collaboration
Measurements of multijet production cross sections in proton-proton collisions at 7 TeV center-of-mass energy with the ATLAS Detector
title Measurements of multijet production cross sections in proton-proton collisions at 7 TeV center-of-mass energy with the ATLAS Detector
title_full Measurements of multijet production cross sections in proton-proton collisions at 7 TeV center-of-mass energy with the ATLAS Detector
title_fullStr Measurements of multijet production cross sections in proton-proton collisions at 7 TeV center-of-mass energy with the ATLAS Detector
title_full_unstemmed Measurements of multijet production cross sections in proton-proton collisions at 7 TeV center-of-mass energy with the ATLAS Detector
title_short Measurements of multijet production cross sections in proton-proton collisions at 7 TeV center-of-mass energy with the ATLAS Detector
title_sort measurements of multijet production cross sections in proton-proton collisions at 7 tev center-of-mass energy with the atlas detector
topic Detectors and Experimental Techniques
url http://cds.cern.ch/record/1298854
work_keys_str_mv AT theatlascollaboration measurementsofmultijetproductioncrosssectionsinprotonprotoncollisionsat7tevcenterofmassenergywiththeatlasdetector