CERN Accelerating science

Article
Report number arXiv:1106.1592 ; CERN-PH-EP-2011-079
Title Measurement of W$\gamma$ and Z$\gamma$ production in proton-proton collisions at $\sqrt{s}$ = 7 TeV with the ATLAS Detector
Related titleMeasurement of Wgamma and Zgamma production in proton-proton collisions at sqrt(s)=7 TeV with the ATLAS Detector
Author(s) ATLAS Collaboration  顯示全部 3046 名作者
Publication 2011
Imprint 09 Jun 2011
Number of pages 25
Note Comments: 25 pages plus author list (46 pages total), 8 figures, 8 tables, submitted to JHEP journal
25 pages plus author list (46 pages total), 8 figures, 8 tables, submitted to JHEP journal
In: JHEP 09 (2011) 072
DOI 10.1007/JHEP09(2011)072
Subject category Particle Physics - Experiment
Accelerator/Facility, Experiment CERN LHC ; ATLAS
Abstract We present studies of W and Z bosons with associated high energy photons produced in pp collisions at sqrt(s)=7 TeV. The analysis uses 35 pb-1 of data collected by the ATLAS experiment in 2010. The event selection requires W and Z bosons decaying into high pT leptons (electrons or muons) and a photon with ET>15 GeV separated from the lepton(s) by a distance Delta_R(l,gamma)>0.7 in eta-phi space. A total of 95 (97) pp->e nu gamma + X (pp->mu nu gamma + X) and 25 (23) pp->e+ e- gamma + X (pp->mu+ mu- gamma + X) event candidates are selected. The kinematic distributions of the leptons and photons and the production cross sections are measured. The data are found to agree with Standard Model predictions that include next-to-leading-order O(alpha alpha_s) contributions.
Copyright/License publication: © 2011-2025 CERN (License: CC-BY-3.0)
preprint: © 2011-2025 CERN (License: CC-BY-3.0)



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 記錄創建於2011-06-09,最後更新在2024-03-14


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