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Measurement of $W\gamma$ and $Z\gamma$ Production in Proton-Proton Collisions at $\sqrt{s}=7$ TeV with the ATLAS Detector
Stockholm University, Faculty of Science, Department of Physics. Stockholm University, Faculty of Science, The Oskar Klein Centre for Cosmo Particle Physics (OKC). (Elementarpartikelfysik)
Stockholm University, Faculty of Science, Department of Physics.
Stockholm University, Faculty of Science, Department of Physics. Stockholm University, Faculty of Science, The Oskar Klein Centre for Cosmo Particle Physics (OKC). (Elementarpartikelfysik)
Stockholm University, Faculty of Science, Department of Physics. (Systemfysik)
2011 (English)In: Journal of High Energy Physics (JHEP), ISSN 1029-8479, E-ISSN 1126-6708, Vol. 09, 072- p.Article in journal (Refereed) Published
##### Abstract [en]

We present studies of W and Z bosons with associated high energy photons produced in pp collisions at root 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 E(T) > 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.

##### Place, publisher, year, edition, pages
2011. Vol. 09, 072- p.
##### National Category
Subatomic Physics
Physics
##### Identifiers
ISI: 000296087000001OAI: oai:DiVA.org:su-63100DiVA: diva2:446687
Atlas
##### Funder
Swedish Research CouncilKnut and Alice Wallenberg Foundation
##### Note
authorCount :3046Available from: 2011-10-09 Created: 2011-10-09 Last updated: 2012-01-25Bibliographically approved

#### Open Access in DiVA

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Publisher's full texthttp://dx.doi.org/10.1007/JHEP09(2011)072

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##### By author/editor
Åsman, BarbroBohm, ChristianClément, ChristopheEriksson, DanielGellerstedt, KarlHellman, StenHidvegi, AttilaHolmgren, Sven-OlofJohansson, ErikJon-And, KerstinLundberg, JohanMilstead, DavidMoa, TorbjörnNordkvist, BjörnOhm, ChristianPapadelis, ArasSilverstein, SamuelSjölin, JörgenStrandberg, SaraTylmad, MajaYang, Zhaoyu
##### By organisation
Department of PhysicsThe Oskar Klein Centre for Cosmo Particle Physics (OKC)
##### In the same journal
Journal of High Energy Physics (JHEP)
##### On the subject
Subatomic Physics