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Measurement of the W+W- Cross Section in root s=7 TeV pp Collisions with ATLAS

Aad, G; Abbott, B; Abdallah, J; Abdelalim, AA; Abdesselam, A; Abdinov, O; Abi, B; ... ATLAS Collaboration, ; + view all (2011) Measurement of the W+W- Cross Section in root s=7 TeV pp Collisions with ATLAS. PHYS REV LETT , 107 (4) , Article 041802. 10.1103/PhysRevLett.107.041802. Green open access

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Abstract

This Letter presents a measurement of the W+W- production cross section in root s = 7 TeV pp collisions by the ATLAS experiment, using 34 pb(-1) of integrated luminosity produced by the Large Hadron Collider at CERN. Selecting events with two isolated leptons, each either an electron or a muon, 8 candidate events are observed with an expected background of 1.7 +/- 0.6 events. The measured cross section is 41(-16)(+20)(stat) +/- 5(syst) +/- 1(lumi) pb, which is consistent with the standard model prediction of 44 +/- 3 pb calculated at next-to-leading order in QCD.

Type: Article
Title: Measurement of the W+W- Cross Section in root s=7 TeV pp Collisions with ATLAS
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevLett.107.041802
Publisher version: http://dx.doi.org/10.1103/PhysRevLett.107.041802
Language: English
Additional information: Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. © 2011 CERN, for the ATLAS Collaboration
Keywords: W-PAIR PRODUCTION, BRANCHING FRACTIONS, E(+)E(-) INTERACTIONS
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Computer Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: https://discovery.ucl.ac.uk/id/eprint/1318472
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