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dc.contributor.authorALICE Collaboration
dc.contributor.authorChang, BeomSu
dc.contributor.authorKim, Dong Jo
dc.contributor.authorKral, Jiri
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.accessioned2016-03-23T05:45:00Z
dc.date.available2016-03-23T05:45:00Z
dc.date.issued2016
dc.identifier.citationALICE Collaboration. (2016). Production of light nuclei and anti-nuclei in pp and Pb-Pb collisions at energies available at the CERN Large Hadron Collider. <em>Physical Review C</em>, 93 (2), 024917. <a href="http://dx.doi.org/10.1103/PhysRevC.93.024917">doi:10.1103/PhysRevC.93.024917</a>
dc.identifier.otherTUTKAID_69543
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/49160
dc.description.abstractThe production of (anti-)deuteron and (anti-) 3 He nuclei in Pb-Pb collisions at √sNN = 2.76 TeV has been studied using the ALICE detector at the LHC. The spectra exhibit a significant hardening with increasing centrality. Combined blast-wave fits of several particles support the interpretation that this behavior is caused by an increase of radial flow. The integrated particle yields are discussed in the context of coalescence and thermal-statistical model expectations. The particle ratios, 3 He /d and 3 He /p, in Pb-Pb collisions are found to be in agreement with a common chemical freeze-out temperature of Tchem ≈ 156 MeV. These ratios do not vary with centrality which is in agreement with the thermal-statistical model. In a coalescence approach, it excludes models in which nucleus production is proportional to the particle multiplicity and favors those in which it is proportional to the particle density instead. In addition, the observation of 31 anti-tritons in Pb-Pb collisions is reported. For comparison, the deuteron spectrum in pp collisions at √s = 7 TeV is also presented. While the p/π ratio is similar in pp and Pb-Pb collisions, the d/p ratio in pp collisions is found to be lower by a factor of 2.2 than in Pb-Pb collisions.
dc.language.isoeng
dc.publisherAmerican Physical Society
dc.relation.ispartofseriesPhysical Review C
dc.subject.othernuclei
dc.subject.otheranti-nuclei
dc.subject.otherLHC
dc.titleProduction of light nuclei and anti-nuclei in pp and Pb-Pb collisions at energies available at the CERN Large Hadron Collider
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-201603221918
dc.contributor.laitosFysiikan laitosfi
dc.contributor.laitosDepartment of Physicsen
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.date.updated2016-03-22T13:15:04Z
dc.type.coarjournal article
dc.description.reviewstatuspeerReviewed
dc.relation.issn0556-2813
dc.relation.volume93
dc.type.versionpublishedVersion
dc.rights.copyright© 2016 CERN, for the ALICE Collaboration. Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License.
dc.rights.accesslevelopenAccessfi
dc.rights.urlhttp://creativecommons.org/licenses/by/3.0/
dc.relation.doi10.1103/PhysRevC.93.024917


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© 2016 CERN, for the ALICE Collaboration. Published by the American Physical Society under the terms of the
Creative Commons Attribution 3.0 License.
Except where otherwise noted, this item's license is described as © 2016 CERN, for the ALICE Collaboration. Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License.