Journalartikel

Jahr der Veröffentlichung: 2007

Seiten: 183-200

Zeitschrift: Nuclear Physics A: Nuclear and Hadronic Physics

Bandnummer: 786

ISSN: 0375-9474

eISSN: 1873-1554

Open Access Status: Green

DOI Link: https://doi.org/10.1016/j.nuclphysa.2007.01.090

Verlag: Elsevier

Abstract: 
Charmonium production and suppression in In + In and Pb + Pb reactions at SPS energies is investigated with the HSD transport approach within the 'hadronic comover model' as well as the 'QGP threshold scenario'. The results of the transport calculations for J/psi suppression and the psi' to J/psi ratio are compared with the recent data of the NA50 and NA60 Collaborations. We find that the comover absorption model-with a single parameter vertical bar M-0 vertical bar(2) for the matrix element squared for charmonium-meson dissociation-performs best with respect to all data sets. The 'threshold scenario-within different assumptions for the melting.energy densities-yields a reasonable suppression for J/kv but fails in reproducing the psi' to J/psi (P ratio for Pb + Pb at 158 A GeV. Predictions for Au + Au reactions are presented for a bombarding energy of 25 A GeV in the different scenarios which will allow for a clear distinction between the models from the experimental side at the future FAIR facility. (c) 2007 Elsevier B.V. All rights reserved.

Harvard-Zitierstil: Linnyk, O., Bratkovskaya, E., Cassing, W. and Stoecker, H. (2007) Charmonium dynamics in nucleus-nucleus collisions at SPS and FAIR energies, Nuclear Physics A: Nuclear and Hadronic Physics, 786, pp. 183-200. https://doi.org/10.1016/j.nuclphysa.2007.01.090

APA-Zitierstil: Linnyk, O., Bratkovskaya, E., Cassing, W., & Stoecker, H. (2007). Charmonium dynamics in nucleus-nucleus collisions at SPS and FAIR energies. Nuclear Physics A: Nuclear and Hadronic Physics. 786, 183-200. https://doi.org/10.1016/j.nuclphysa.2007.01.090