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dc.contributor.authorBuanes, Trygve
dc.contributor.authorBurgess, Thomas
dc.contributor.authorEigen, Gerald
dc.contributor.authorKastanas, Alex
dc.contributor.authorLiebig, Wolfgang
dc.contributor.authorLipniacka, Anna
dc.contributor.authorRosendahl, Peter Lundgaard
dc.contributor.authorSandaker, Heidi
dc.contributor.authorSjursen, Therese B.
dc.contributor.authorStugu, Bjarne Sandvik
dc.contributor.authorTonoyan, Arshak
dc.contributor.authorUgland, Maren
dc.contributor.authorBugge, Lars
dc.contributor.authorBuran, Torleiv
dc.contributor.authorCameron, David Gordon
dc.contributor.authorCzyczula, Zofia
dc.contributor.authorGjelsten, Børge Kile
dc.contributor.authorGramstad, Eirik
dc.contributor.authorLund, Esben
dc.contributor.authorOuld-Saada, Farid
dc.contributor.authorPajchel, Katarina
dc.contributor.authorPylypchenko, Yuriy
dc.contributor.authorRead, Alexander Lincoln
dc.contributor.authorRøhne, Ole Myren
dc.contributor.authorSamset, Bjørn Hallvard
dc.contributor.authorSmestad, Lillian
dc.contributor.authorStapnes, Steinar
dc.contributor.authorStrandlie, Are
dc.contributor.authorAad, Georges
dc.contributor.authorAbajyan, Tatevik
dc.contributor.authorAbbott, Brad
dc.contributor.authorAbdallah, Jalal
dc.contributor.authorAbdel Khalek, Samah
dc.contributor.authorAbdelalim, Ahmed Ali
dc.contributor.authorAbdesselam, Abdel
dc.contributor.authorAbdinov, Ovsat Bahram oglu
dc.contributor.authorAbi, Babak
dc.contributor.authorAbolins, Maris
dc.contributor.authorAbouZeid, Hass
dc.contributor.authorAbramowicz, Halina
dc.contributor.authorAbreu, Henso
dc.contributor.authorAcerbi, Emilio
dc.contributor.authorAdams, David
dc.contributor.authorAddy, Tetteh N.
dc.contributor.authorAdelman, Jareed
dc.contributor.authorAdomeit, Stefanie
dc.contributor.authorAdragna, Paolo
dc.contributor.authorAdye, Tim
dc.contributor.authorAefsky, Scott Alan
dc.contributor.authorAharrouche, Mohamed
dc.contributor.authorATLAS, Collaboration
dc.date.accessioned2016-03-31T10:03:58Z
dc.date.available2016-03-31T10:03:58Z
dc.date.issued2013-01-11
dc.identifier.citationJournal of High Energy Physics (JHEP) 2013(1)eng
dc.identifier.urihttp://hdl.handle.net/1956/11785
dc.description.abstractThe ATLAS experiment at the LHC has measured the production cross section of events with two isolated photons in the final state, in proton-proton collisions at s√=7TeV. The full data set collected in 2011, corresponding to an integrated luminosity of 4.9 fb−1, is used. The amount of background, from hadronic jets and isolated electrons, is estimated with data-driven techniques and subtracted. The total cross section, for two isolated photons with transverse energies above 25 GeV and 22 GeV respectively, in the acceptance of the electromagnetic calorimeter (|η| < 1.37 and 1.52 < |η| < 2.37) and with an angular separation ΔR > 0.4, is 44.0+3.2−4.2 pb. The differential cross sections as a function of the di-photon invariant mass, transverse momentum, azimuthal separation, and cosine of the polar angle of the largest transverse energy photon in the Collins-Soper di-photon rest frame are also measured. The results are compared to the prediction of leading-order parton-shower and next-to-leading-order and next-to-next-to-leading-order parton-level generators.eng
dc.language.isoengeng
dc.publisherSpringereng
dc.rightsAttribution CC BYeng
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/eng
dc.subjectHadron-Hadron Scatteringeng
dc.titleMeasurement of isolated-photon pair production in pp collisions at root s=7 TeV with the ATLAS detectoreng
dc.typeJournal articleeng
dc.subject.nsiVDP::Matematikk og naturvitenskap: 400::Fysikk: 430::Kjerne- og elementærpartikkelfysikk: 431
dc.subject.nsiVDP::Mathematics and natural scienses: 400::Physics: 430::Nuclear and elementary particle physics: 431
dc.date.updated2015-12-11T09:58:11Z
dc.rights.holderCopyright 2013 the authorseng
dc.type.versionpublishedVersioneng
bora.peerreviewedPeer reviewedeng
dc.type.documentJournal article
dc.identifier.cristinID1032677
dc.identifier.doi10.1007/JHEP01(2013)086eng
dc.source.issn1029-8479eng


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