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dc.contributor.authorAaboud, Morad
dc.contributor.authorAad, Georges
dc.contributor.authorAbbott, Brad
dc.contributor.authorAbdinov, Ovsat Bahram oglu
dc.contributor.authorAbeloos, Baptiste
dc.contributor.authorAbidi, Syed Haider
dc.contributor.authorAbouZeid, Hass
dc.contributor.authorAbraham, Nadine L.
dc.contributor.authorAbramowicz, Halina
dc.contributor.authorAbreu, Henso
dc.contributor.authorBuanes, Trygve
dc.contributor.authorDale, Ørjan
dc.contributor.authorEigen, Gerald
dc.contributor.authorLiebig, Wolfgang
dc.contributor.authorLipniacka, Anna
dc.contributor.authorMartin dit Latour, Bertrand
dc.contributor.authorMæland, Steffen
dc.contributor.authorStugu, Bjarne
dc.contributor.authorYang, Zongchang
dc.contributor.authorZalieckas, Justas
dc.contributor.authorBugge, Magnar Kopangen
dc.contributor.authorCameron, David Gordon
dc.contributor.authorCatmore, James Richard
dc.contributor.authorFeigl, Simon
dc.contributor.authorFranconi, Laura
dc.contributor.authorGaronne, Vincent
dc.contributor.authorGjelsten, Børge Kile
dc.contributor.authorGramstad, Eirik
dc.contributor.authorMorisbak, Vanja
dc.contributor.authorNilsen, Jon Kerr
dc.contributor.authorOppen, Henrik
dc.contributor.authorOuld-Saada, Farid
dc.contributor.authorRaddum, Silje Hattrem
dc.contributor.authorRead, Alexander Lincoln
dc.contributor.authorRøhne, Ole Myren
dc.contributor.authorSandaker, Heidi
dc.contributor.authorSerfon, Cédric
dc.contributor.authorStapnes, Steinar
dc.contributor.authorVadla, Knut Oddvar Høie
dc.contributor.authorAbreu, Rômulo F.
dc.contributor.authorAbulaiti, Yiming
dc.contributor.authorAcharya, Bobby S.
dc.contributor.authorAdachi, Shunsuke
dc.contributor.authorAdamczyk, Leszek
dc.contributor.authorAdelman, Jareed
dc.contributor.authorAdersberger, Michael
dc.contributor.authorAdye, Tim
dc.contributor.authorAffolder, Anthony Allen
dc.contributor.authorAfik, Yoav
dc.contributor.authorAgatonovic-Jovin, Tatjana
dc.contributor.authorATLAS, Collaboration
dc.date.accessioned2019-04-15T11:00:51Z
dc.date.available2019-04-15T11:00:51Z
dc.date.issued2018-02-12
dc.identifier.citationAaboud M, Aad G, Abbott B, Abdinov OBo, Abeloos B, Abidi SH, AbouZeid H, et al., ATLAS C. Measurement of long-range multiparticle azimuthal correlations with the subevent cumulant method in pp and p +Pb collisions with the ATLAS detector at the CERN Large Hadron Collider. Physical Review C. 2018;97(2):024904eng
dc.identifier.urihttp://hdl.handle.net/1956/19333
dc.description.abstractA detailed study of multiparticle azimuthal correlations is presented using ppdata at √s=5.02 and 13 TeV, and p+Pb data at √sNN=5.02 TeV, recorded with the ATLAS detector at the CERN Large Hadron Collider. The azimuthal correlations are probed using four-particle cumulants c_n{4} and flow coefficients v_n{4}=(−c_n{4})^1/4 for n=2 and 3, with the goal of extracting long-range multiparticle azimuthal correlation signals and suppressing the short-range correlations. The values of c_n{4} are obtained as a function of the average number of charged particles per event, ⟨N_ch⟩, using the recently proposed two-subevent and three-subevent cumulant methods, and compared with results obtained with the standard cumulant method. The standard method is found to be strongly biased by short-range correlations, which originate mostly from jets with a positive contribution to c_n{4}. The three-subevent method, on the other hand, is found to be least sensitive to short-range correlations. The three-subevent method gives a negative c_2{4}, and therefore a well-defined v_2{4}, nearly independent of ⟨N_ch⟩, which implies that the long-range multiparticle azimuthal correlations persist to events with low multiplicity. Furthermore, v_2{4} is found to be smaller than the v_2{2} measured using the two-particle correlation method, as expected for long-range collective behavior. Finally, the measured values of v_2{4} and v_2{2} are used to estimate the number of sources relevant for the initial eccentricity in the collision geometry. The results based on the subevent cumulant technique provide direct evidence, in small collision systems, for a long-range collectivity involving many particles distributed across a broad rapidity interval.eng
dc.language.isoengeng
dc.publisherAmerican Physical Societyeng
dc.rightsAttribution CC BYeng
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/eng
dc.titleMeasurement of long-range multiparticle azimuthal correlations with the subevent cumulant method in pp and p +Pb collisions with the ATLAS detector at the CERN Large Hadron Collidereng
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.updated2018-08-20T11:53:57Z
dc.rights.holderCopyright 2018 CERN, for the ATLAS Collaborationeng
dc.type.versionpublishedVersioneng
bora.peerreviewedPeer reviewedeng
dc.type.documentJournal article
dc.identifier.cristinID1584608
dc.identifier.doi10.1103/PhysRevC.97.024904eng
dc.source.issn2469-9985eng
dc.relation.journalPhysical Review C


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