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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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https://hdl.handle.net/1956/5251
Utgivelsesdato
2011-09-14
Metadata
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  • Department of Physics and Technology [1816]
Originalversjon
https://doi.org/10.1007/jhep09(2011)072
Sammendrag
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.
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There are approximately 3300 authors. Only a few of them have been given author entries in addition to the Collaboration.
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Springer
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©The Author(s) 2011

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