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Measurement of W and Z production in proton-proton collisions at p s = 7 TeV with the ATLAS detector

ATLAS, Collaboration; Aad, Georges; Abbott, Brad; Abdallah, Jalal; Abdelalim, A. A.; Buanes, Trygve
Peer reviewed, Journal article
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URI
https://hdl.handle.net/1956/5251
Date
2011-09-14
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  • Department of Physics and Technology [1327]
Original version
Journal of High Energy Physics 9(72)   https://doi.org/10.1007/jhep09(2011)072
Abstract
We present studies of W and Z bosons with associated high energy photons produced in pp collisions at 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 p T leptons (electrons or muons) and a photon with E T > 15 GeV separated from the lepton(s) by a distance ∆R(l, γ) > 0.7 in η-ϕ space. A total of 95 (97) pp → e ± νγ + X(pp → μ ± νγ + X) and 25 (23) pp → e + e − γ + X(pp → μ + μ − γ + 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(αα s ) contributions.
Description
There are approximately 3300 authors. Only a few of them have been given author entries in addition to the Collaboration.
Publisher
Springer
Copyright
©The Author(s) 2011

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