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dc.contributor.authorNiemi, Harri
dc.contributor.authorEskola, Kari
dc.contributor.authorPaatelainen, Risto
dc.date.accessioned2016-06-09T06:08:53Z
dc.date.available2016-06-09T06:08:53Z
dc.date.issued2016
dc.identifier.citationNiemi, H., Eskola, K., & Paatelainen, R. (2016). Event-by-event fluctuations in a perturbative QCD + saturation + hydrodynamics model: Determining QCD matter shear viscosity in ultrarelativistic heavy-ion collisions. <i>Physical Review C</i>, <i>93</i>(2), Article 024907. <a href="https://doi.org/10.1103/PhysRevC.93.024907" target="_blank">https://doi.org/10.1103/PhysRevC.93.024907</a>
dc.identifier.otherCONVID_25581314
dc.identifier.otherTUTKAID_69363
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/50217
dc.description.abstractWe introduce an event-by-event perturbative-QCD + saturation + hydro (“EKRT”) framework for ultrarelativistic heavy-ion collisions, where we compute the produced fluctuating QCD-matter energy densities from next-to-leading-order perturbative QCD using a saturation conjecture to control soft-particle production and describe the space-time evolution of the QCD matter with dissipative fluid dynamics, event by event. We perform a simultaneous comparison of the centrality dependence of hadronic multiplicities, transverse momentum spectra, and flow coefficients of the azimuth-angle asymmetries against the LHC and RHIC measurements. We compare also the computed event-by-event probability distributions of relative fluctuations of elliptic flow and event-plane angle correlations with the experimental data from Pb + Pb collisions at the LHC. We show how such a systematic multienergy and multiobservable analysis tests the initial-state calculation and the applicability region of hydrodynamics and, in particular, how it constrains the temperature dependence of the shear viscosity-to-entropy ratio of QCD matter in its different phases in a remarkably consistent manner.
dc.language.isoeng
dc.publisherAmerican Physical Society
dc.relation.ispartofseriesPhysical Review C
dc.subject.otherheavy-ion collisions
dc.subject.otherrelativistic nuclear collisions
dc.subject.otherquantum chromodynamics
dc.subject.otherhydrodynamics model
dc.titleEvent-by-event fluctuations in a perturbative QCD + saturation + hydrodynamics model: Determining QCD matter shear viscosity in ultrarelativistic heavy-ion collisions
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-201606062914
dc.contributor.laitosFysiikan laitosfi
dc.contributor.laitosDepartment of Physicsen
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.date.updated2016-06-06T11:09:16Z
dc.type.coarjournal article
dc.description.reviewstatuspeerReviewed
dc.relation.issn2469-9985
dc.relation.numberinseries2
dc.relation.volume93
dc.type.versionpublishedVersion
dc.rights.copyright© 2016 American Physical Society. Published in this repository with the kind permission of the publisher.
dc.rights.accesslevelopenAccessfi
dc.relation.doi10.1103/PhysRevC.93.024907


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