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dc.contributor.authorAad, Georgeseng
dc.contributor.authorAbbott, Bradeng
dc.contributor.authorAbdallah, Jalaleng
dc.contributor.authorAbdel Khalek, Samaheng
dc.contributor.authorAben, Rosemarieeng
dc.contributor.authorAbi, Babakeng
dc.contributor.authorAbolins, Mariseng
dc.contributor.authorAbouZeid, Hasseng
dc.contributor.authorAbramowicz, Halinaeng
dc.contributor.authorAbreu, Hensoeng
dc.contributor.authorBuanes, Trygveeng
dc.contributor.authorDale, Ørjaneng
dc.contributor.authorEigen, Geraldeng
dc.contributor.authorKastanas, Alexeng
dc.contributor.authorLiebig, Wolfgangeng
dc.contributor.authorLipniacka, Annaeng
dc.contributor.authorMartin dit Latour, Bertrandeng
dc.contributor.authorRosendahl, Peter Lundgaardeng
dc.contributor.authorSandaker, Heidieng
dc.contributor.authorSjursen, Therese B.eng
dc.contributor.authorSmestad, Lillianeng
dc.contributor.authorStugu, Bjarneeng
dc.contributor.authorUgland, Mareneng
dc.contributor.authorBugge, Larseng
dc.contributor.authorBugge, Magnar Kopangeneng
dc.contributor.authorCameron, David Gordoneng
dc.contributor.authorCatmore, James Richardeng
dc.contributor.authorCzyczula, Zofiaeng
dc.contributor.authorFranconi, Lauraeng
dc.contributor.authorGjelsten, Børge Kileeng
dc.contributor.authorGramstad, Eirikeng
dc.contributor.authorOuld-Saada, Farideng
dc.contributor.authorPajchel, Katarinaeng
dc.contributor.authorPedersen, Maikeneng
dc.contributor.authorRead, Alexander Lincolneng
dc.contributor.authorRøhne, Ole Myreneng
dc.contributor.authorStapnes, Steinareng
dc.contributor.authorStrandlie, Areeng
dc.contributor.authorAbreu, Rômulo F.eng
dc.contributor.authorAdamczyk, Leszekeng
dc.contributor.authorAdams, Davideng
dc.contributor.authorAdelman, Jareedeng
dc.contributor.authorAdomeit, Stefanieeng
dc.contributor.authorAdye, Timeng
dc.contributor.authorAgatonovic-Jovin, Tatjanaeng
dc.contributor.authorAguilar Saavedra, Juan Antonioeng
dc.contributor.authorAgustoni, Marcoeng
dc.contributor.authorÅkerstedt, Henrikeng
dc.contributor.authorÅkesson, Torsten P.A.eng
dc.contributor.authorÅsman, Barbroeng
dc.contributor.authorATLAS, Collaborationeng
dc.description.abstractMeasurements of two-particle correlation functions and the first five azimuthal harmonics, \(v_1\) to \(v_5\). are presented, using 28 \(\mathrm{nb}^{-1}\) of \(p\).Pb collisions at a nucleon-nucleon center-of-mass energy of \(\sqrt{s_{\mathrm{NN}}}=5.02\) TeV measured with the ATLAS detector at the LHC. Significant long-range "ridge-like" correlations are observed for pairs with small relative azimuthal angle \(|\Delta\phi|<\pi/3\) and back-to-back pairs \(|\Delta\phi|>2\pi/3\) over the transverse momentum range \(0.4<p_{\rm T}<12\) GeV and in different intervals of event activity. The event activity is defined by either the number of reconstructed tracks or the total transverse energy on the Pb-fragmentation side. The azimuthal structure of such long-range correlations is Fourier decomposed to obtain the harmonics \(v_n\) as a function of \(p_{\rm T}\) and event activity. The extracted \(v_n\) values for \(n=2\) to 5 decrease with \(n\). The \(v_2\) and \(v_3\) values are found to be positive in the measured \(p_{\rm T}\) range. The \(v_1\) is also measured as a function of \(p_{\rm T}\) and is observed to change sign around \(p_{\rm T}\approx 1.5\).2.0 GeV and then increase to about 0.1 for \(p_{\rm T}>4\) GeV. The \(v_2(p_{\rm T})\). \(v_3(p_{\rm T})\) and \(v_4(p_{\rm T})\) are compared to the \(v_n\) coefficients in Pb+Pb collisions at \(\sqrt{s_{\mathrm{NN}}} =2.76\) TeV with similar event multiplicities. Reasonable agreement is observed after accounting for the difference in the average \(p_{\rm T}\) of particles produced in the two collision systems.en_US
dc.publisherAmerican Physical Societyen_US
dc.rightsAttribution CC BYeng
dc.titleMeasurement of long-range pseudorapidity correlations and azimuthal harmonics in \(\sqrt{s_{\mathrm{NN}}}\)=5.02 TeV proton-lead collisions with the ATLAS detectoren_US
dc.typePeer reviewed
dc.typeJournal article
dc.rights.holderCopyright 2014 CERN, for the ATLAS Collaborationen_US
dc.source.journalPhysical Review C. Nuclear Physics
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

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