Charmed signatures for phase transitions in heavy-ion collisions

  • The interplay of charmonium production and suppression in In+In and Pb+Pb reactions at 158 AGeV and in Au+Au reactions at sqrt(s)=200 GeV is investigated with the HSD transport approach within the hadronic comover model' and the QGP melting scenario'. The results for the J/Psi suppression and the Psi' to J/Psi ratio are compared to the recent data of the NA50, NA60, and PHENIX Collaborations. We find that, at 158 AGeV, the comover absorption model performs better than the scenario of abrupt threshold melting. However, neither interaction with hadrons alone nor simple color screening satisfactory describes the data at sqrt(s)=200 GeV. A deconfined phase is clearly reached at RHIC, but a theory having the relevant degrees of freedom in this regime (strongly interacting quarks/gluons) is needed to study its transport properties.

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Author:Elena L. BratkovskayaORCiDGND, Olena LinnykORCiDGND, Wolfgang CassingGND, Horst StöckerORCiDGND
URN:urn:nbn:de:hebis:30-58405
URL:https://pos.sissa.it/047/042/pdf
ISSN:1824-8039
ArXiv Id:http://arxiv.org/abs/0709.2185v1
Parent Title (English):Proceedings of Science
Publisher:SISSA
Place of publication:Trieste
Document Type:Article
Language:English
Year of Completion:2007
Date of first Publication:2007/09/14
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Creating Corporation:Critical Point and Onset of Deconfinement - 4th International Workshop, July 9 - 13, 2007, Darmstadt, Germany
Release Date:2009/03/13
Volume:2007
Issue:(CPOD07)042
Page Number:10
First Page:1
Last Page:10
Note:
© Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence.
Source:arXiv:0709.2185v1 ; Critical Point and Onset of Deconfinement - 4th International Workshop July 9 - 13, 2007 Darmstadt, Germany
HeBIS-PPN:210164557
Institutes:Physik / Physik
Wissenschaftliche Zentren und koordinierte Programme / Frankfurt Institute for Advanced Studies (FIAS)
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Licence (German):License LogoCreative Commons - Namensnennung-Keine kommerzielle Nutzung-Weitergabe unter gleichen Bedingungen