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dc.contributor.authorALICE Collaboration
dc.contributor.authorChang, BeomSu
dc.contributor.authorKim, Dong Jo
dc.contributor.authorRak, Jan
dc.contributor.authorRäsänen, Sami
dc.contributor.authorSlupecki, Maciej
dc.contributor.authorSnellman, Tomas
dc.contributor.authorTrzaska, Wladyslaw
dc.contributor.authorVargyas, Márton
dc.contributor.authorViinikainen, Jussi
dc.date.accessioned2019-04-15T09:59:58Z
dc.date.available2019-04-15T09:59:58Z
dc.date.issued2019fi
dc.identifier.citationALICE Collaboration. (2019). Charged-particle pseudorapidity density at mid-rapidity in p–Pb collisions at √sNN = 8.16 TeV. <em>European Physical Journal C</em>, 79 (4), 307. <a href="https://doi.org/10.1140/epjc/s10052-019-6801-9">doi:10.1140/epjc/s10052-019-6801-9</a>fi
dc.identifier.otherTUTKAID_81185
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/63494
dc.description.abstractThe pseudorapidity density of charged particles, dNch/dη, in p–Pb collisions has been measured at a centreof-mass energy per nucleon–nucleon pair of √sNN = 8.16 TeV at mid-pseudorapidity for non-single-diffractive events. The results cover 3.6 units of pseudorapidity, |η| < 1.8. The dNch/dη value is 19.1 ± 0.7 at |η| < 0.5. This quantity divided by Npart /2 is 4.73±0.20, where Npart is the average number of participating nucleons, is 9.5% higher than the corresponding value for p–Pb collisions at √sNN = 5.02 TeV. Measurements are compared with models based on different mechanisms for particle production. All models agree within uncertainties with data in the Pb-going side, while HIJING overestimates, showing a symmetric behaviour, and EPOS underestimates the p-going side of the dNch/dη distribution. Saturation-based models reproduce the distributions well for η > −1.3. The dNch/dη is also measured for different centrality estimators, based both on the chargedparticle multiplicity and on the energy deposited in the ZeroDegree Calorimeters. A study of the implications of the large multiplicity fluctuations due to the small number of participants for systems like p–Pb in the centrality calculation for multiplicity-based estimators is discussed, demonstrating the advantages of determining the centrality with energy deposited near beam rapidity.fi
dc.format.mimetypeapplication/pdf
dc.language.isoeng
dc.publisherSpringer Berlin Heidelberg
dc.relation.ispartofseriesEuropean Physical Journal C
dc.rightsCC BY 4.0
dc.subject.otherhiukkasfysiikkafi
dc.subject.otherp–Pb collisionsfi
dc.titleCharged-particle pseudorapidity density at mid-rapidity in p–Pb collisions at √sNN = 8.16 TeVfi
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-201904122166
dc.contributor.laitosFysiikan laitosfi
dc.contributor.laitosDepartment of Physicsen
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.date.updated2019-04-12T09:15:16Z
dc.description.reviewstatuspeerReviewed
dc.relation.issn1434-6044
dc.relation.numberinseries4
dc.relation.volume79
dc.type.versionpublishedVersion
dc.rights.copyright© CERN for the benefit of the ALICE collaboration 2019
dc.rights.accesslevelopenAccessfi
dc.format.contentfulltext
dc.rights.urlhttps://creativecommons.org/licenses/by/4.0/
dc.relation.doi10.1140/epjc/s10052-019-6801-9


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