Journalartikel

Jahr der Veröffentlichung: 1997

Seiten: 570-590

Zeitschrift: Nuclear Physics A: Nuclear and Hadronic Physics

Bandnummer: 623

Heftnummer: 3-4

ISSN: 0375-9474

Open Access Status: Green

DOI Link: https://doi.org/10.1016/S0375-9474(97)88426-6

Verlag: Elsevier

Abstract: 
We study the production of c (c) over bar pairs and dimuons from hard collisions in nuclear reactions within the covariant transport approach HSD, which describes successfully both hadronic and electromagnetic observables from p + A and A + A collisions from SIS to SPS energies. The production of c (c) over bar and Drell-Yan pairs is treated perturbatively employing experimental cross sections while the interactions of c (c) over bar pairs with hadrons are included by conventional cascade-type two-body collisions. Adopting 6 mb for the c (c) over bar-baryon cross sections the data on J/Psi suppression in p + A reactions are reproduced in line with calculations based on the Glauber model. We study different models for c (c) over bar dissociation on mesons in comparison with the experimental data of the HELIOS-3, NA38 and NA50 collaborations. Adopting absorption cross sections with mesons above the D (D) over bar threshold in the order of 1.5-3 mb we find that all data on J/Psi suppression from both proton-nucleus and nucleus-nucleus collisions can be described without assuming the formation of a quark-gluon plasma in these collisions. (C) 1997 Elsevier Science B.V.

Harvard-Zitierstil: Cassing, W. and Bratkovskaya, E. (1997) Production and absorption of c(c)over-bar pairs in nuclear collisions at SPS energies, Nuclear Physics A: Nuclear and Hadronic Physics, 623(3-4), pp. 570-590. https://doi.org/10.1016/S0375-9474(97)88426-6

APA-Zitierstil: Cassing, W., & Bratkovskaya, E. (1997). Production and absorption of c(c)over-bar pairs in nuclear collisions at SPS energies. Nuclear Physics A: Nuclear and Hadronic Physics. 623(3-4), 570-590. https://doi.org/10.1016/S0375-9474(97)88426-6