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dc.contributor.authorALICE Collaboration
dc.contributor.authorChang, BeomSu
dc.contributor.authorKim, Dong Jo
dc.contributor.authorParkkila, Jasper
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.accessioned2019-03-07T09:42:06Z
dc.date.available2019-03-07T09:42:06Z
dc.date.issued2019fi
dc.identifier.citationALICE Collaboration. (2019). Suppression of Λ(1520) resonance production in central Pb-Pb collisions at √sNN = 2.76 TeV. <em>Physical Review C</em>, 99 (2), 024905. <a href="https://doi.org/10.1103/PhysRevC.99.024905">doi:10.1103/PhysRevC.99.024905</a>fi
dc.identifier.otherTUTKAID_80862
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/63060
dc.description.abstractThe production yield of the Λ(1520) baryon resonance is measured at midrapidity in Pb-Pb collisions at √sNN = 2.76 TeV with the ALICE detector at the Large Hadron Collider (LHC). The measurement is performed in the Λ(1520)→ pK− (and charge conjugate) hadronic decay channel as a function of the transverse momentum (pT) and collision centrality. The ratio of the pT-integrated production of Λ(1520) baryons relative to Λ baryons in central collisions is suppressed by about a factor of 2 with respect to peripheral collisions. This is the first observation of the suppression of a baryonic resonance at the LHC and the first 3σ evidence of Λ(1520) suppression within a single collision system. The measured Λ(1520)/Λ ratio in central collisions is smaller than the value predicted by the statistical hadronization model calculations. The shape of the measured pT distribution and the centrality dependence of the suppression are reproduced by the EPOS3 Monte Carlo event generator. The measurement adds further support to the formation of a dense hadronic phase in the final stages of the evolution of the fireball created in heavy-ion collisions, lasting long enough to cause a significant reduction in the observable yield of short-lived resonances.fi
dc.format.mimetypeapplication/pdf
dc.language.isoeng
dc.publisherAmerican Physical Society
dc.relation.ispartofseriesPhysical Review C
dc.rightsCC BY 4.0
dc.subject.otherhiukkasfysiikkafi
dc.subject.otherheavy ion collisionsfi
dc.subject.otherlambda baryonsfi
dc.titleSuppression of Λ(1520) resonance production in central Pb-Pb collisions at √sNN = 2.76 TeVfi
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-201903061759
dc.contributor.laitosFysiikan laitosfi
dc.contributor.laitosDepartment of Physicsen
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.date.updated2019-03-06T13:15:22Z
dc.description.reviewstatuspeerReviewed
dc.relation.issn2469-9985
dc.relation.numberinseries2
dc.relation.volume99
dc.type.versionpublishedVersion
dc.rights.copyright©2019 CERN, for the ALICE Collaboration
dc.rights.accesslevelopenAccessfi
dc.format.contentfulltext
dc.rights.urlhttps://creativecommons.org/licenses/by/4.0/
dc.relation.doi10.1103/PhysRevC.99.024905


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