Measurement of the WW production cross section in proton-proton collisions at √s = 7 TeV with the ATLAS detector

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We provide the first measurement of the WW production cross section in pp collisions at √s =7 TeV. The WW leptonic decay channels are analyzed with data corresponding to 35 pb^−1 of integrated luminosity collected by the ATLAS detector during 2010 at the CERN Large Hadron Collider. With eight observ...

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Autor principal: The ATLAS collaboration
Lenguaje:eng
Publicado: 2011
Materias:
Detectors and Experimental Techniques
Acceso en línea:http://cds.cern.ch/record/1334877
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author The ATLAS collaboration
author_facet The ATLAS collaboration
author_sort The ATLAS collaboration
collection CERN
description We provide the first measurement of the WW production cross section in pp collisions at √s =7 TeV. The WW leptonic decay channels are analyzed with data corresponding to 35 pb^−1 of integrated luminosity collected by the ATLAS detector during 2010 at the CERN Large Hadron Collider. With eight observed WW candidate events and an estimated background of 1.7±0.6, the measured WW production cross section is 40+20/-16(stat)±7(syst) pb. The probability for the estimated background to fluctuate up to at least the observed number of events is 1.4×10^-3, corresponding to a signal significance of 3.0 standard deviations.
id cern-1334877
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2011
record_format invenio
spelling cern-13348772021-04-18T19:37:01Zhttp://cds.cern.ch/record/1334877engThe ATLAS collaborationMeasurement of the WW production cross section in proton-proton collisions at √s = 7 TeV with the ATLAS detectorDetectors and Experimental TechniquesWe provide the first measurement of the WW production cross section in pp collisions at √s =7 TeV. The WW leptonic decay channels are analyzed with data corresponding to 35 pb^−1 of integrated luminosity collected by the ATLAS detector during 2010 at the CERN Large Hadron Collider. With eight observed WW candidate events and an estimated background of 1.7±0.6, the measured WW production cross section is 40+20/-16(stat)±7(syst) pb. The probability for the estimated background to fluctuate up to at least the observed number of events is 1.4×10^-3, corresponding to a signal significance of 3.0 standard deviations.ATLAS-CONF-2011-015oai:cds.cern.ch:13348772011-03-10
spellingShingle Detectors and Experimental Techniques
The ATLAS collaboration
Measurement of the WW production cross section in proton-proton collisions at √s = 7 TeV with the ATLAS detector
title Measurement of the WW production cross section in proton-proton collisions at √s = 7 TeV with the ATLAS detector
title_full Measurement of the WW production cross section in proton-proton collisions at √s = 7 TeV with the ATLAS detector
title_fullStr Measurement of the WW production cross section in proton-proton collisions at √s = 7 TeV with the ATLAS detector
title_full_unstemmed Measurement of the WW production cross section in proton-proton collisions at √s = 7 TeV with the ATLAS detector
title_short Measurement of the WW production cross section in proton-proton collisions at √s = 7 TeV with the ATLAS detector
title_sort measurement of the ww production cross section in proton-proton collisions at √s = 7 tev with the atlas detector
topic Detectors and Experimental Techniques
url http://cds.cern.ch/record/1334877
work_keys_str_mv AT theatlascollaboration measurementofthewwproductioncrosssectioninprotonprotoncollisionsats7tevwiththeatlasdetector

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