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dc.contributor.authorALICE Collaboration
dc.date.accessioned2024-05-03T06:33:40Z
dc.date.available2024-05-03T06:33:40Z
dc.date.issued2024
dc.identifier.citationALICE Collaboration. (2024). Measurements of long-range two-particle correlation over a wide pseudorapidity range in p–Pb collisions at √sNN = 5.02 TeV. <i>Journal of High Energy Physics</i>, <i>2024</i>(1), Article 199. <a href="https://doi.org/10.1007/JHEP01(2024)199" target="_blank">https://doi.org/10.1007/JHEP01(2024)199</a>
dc.identifier.otherCONVID_213470700
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/94659
dc.description.abstractCorrelations in azimuthal angle extending over a long range in pseudorapidity between particles, usually called the "ridge" phenomenon, were discovered in heavy-ion collisions, and later found in pp and p−Pb collisions. In large systems, they are thought to arise from the expansion (collective flow) of the produced particles. Extending these measurements over a wider range in pseudorapidity and final-state particle multiplicity is important to understand better the origin of these long-range correlations in small-collision systems. In this Letter, measurements of the long-range correlations in p−Pb collisions at √sNN=5.02 TeV are extended to a pseudorapidity gap of Δη∼8 between particles using the ALICE, forward multiplicity detectors. After suppressing non-flow correlations, e.g., from jet and resonance decays, the ridge structure is observed to persist up to a very large gap of Δη∼8 for the first time in p−Pb collisions. This shows that the collective flow-like correlations extend over an extensive pseudorapidity range also in small-collision systems such as p−Pb collisions. The pseudorapidity dependence of the second-order anisotropic flow coefficient, v2(η), is extracted from the long-range correlations. The v2(η) results are presented for a wide pseudorapidity range of −3.1<η<4.8 in various centrality classes in p−Pb collisions. To gain a comprehensive understanding of the source of anisotropic flow in small-collision systems, the v2(η) measurements are compared to hydrodynamic and transport model calculations. The comparison suggests that the final-state interactions play a dominant role in developing the anisotropic flow in small-collision systems.en
dc.format.mimetypeapplication/pdf
dc.language.isoeng
dc.publisherSpringer Science and Business Media LLC
dc.relation.ispartofseriesJournal of High Energy Physics
dc.rightsCC BY 4.0
dc.titleMeasurements of long-range two-particle correlation over a wide pseudorapidity range in p–Pb collisions at √sNN = 5.02 TeV
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-202405033285
dc.contributor.laitosFysiikan laitosfi
dc.contributor.laitosDepartment of Physicsen
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.type.coarhttp://purl.org/coar/resource_type/c_2df8fbb1
dc.description.reviewstatuspeerReviewed
dc.relation.issn1126-6708
dc.relation.numberinseries1
dc.relation.volume2024
dc.type.versionpublishedVersion
dc.rights.copyright© CERN, for the beneft of the ALICE Collaboration. Article funded by SCOAP3
dc.rights.accesslevelopenAccessfi
dc.relation.grantnumber346328
dc.relation.grantnumber824093
dc.relation.grantnumber824093
dc.relation.grantnumber346327
dc.relation.projectidinfo:eu-repo/grantAgreement/EC/H2020/824093/EU//STRONG-2020
dc.subject.ysohiukkasfysiikka
dc.format.contentfulltext
jyx.subject.urihttp://www.yso.fi/onto/yso/p15576
dc.rights.urlhttps://creativecommons.org/licenses/by/4.0/
dc.relation.doi10.1007/JHEP01(2024)199
dc.relation.funderResearch Council of Finlanden
dc.relation.funderEuropean Commissionen
dc.relation.funderResearch Council of Finlanden
dc.relation.funderSuomen Akatemiafi
dc.relation.funderEuroopan komissiofi
dc.relation.funderSuomen Akatemiafi
jyx.fundingprogramCentre of Excellence, AoFen
jyx.fundingprogramRIA Research and Innovation Action, H2020en
jyx.fundingprogramCentre of Excellence, AoFen
jyx.fundingprogramHuippuyksikkörahoitus, SAfi
jyx.fundingprogramRIA Research and Innovation Action, H2020fi
jyx.fundingprogramHuippuyksikkörahoitus, SAfi
jyx.fundinginformationIn addition, individual groups or members have received support from: European Research Council, Strong 2020 - Horizon 2020 (grant nos. 950692, 824093), European Union; Academy of Finland (Center of Excellence in Quark Matter) (grant nos. 346327, 346328), Finland.
dc.type.okmA1


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