Particle rapidity density and collective phenomena in heavy ion collisions

2001/01/09 by R. Ugoccioni, Ugoccioni, R., J. Dias de Deus +1
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #hep-ph

paper · pdf · doi:10.48550/arxiv.hep-ph/0101072

6 pages, 3 ps figures, Latex2e with amsmath. To appear in the Proceedings of the XXX International Symposium on Multiparticle Dynamics (Lake Balaton, October 2000)

arxiv created 2001/01/09 · openalex publication_date 2001/01/09 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We analyse recent results on charged particle pseudo-rapidity densities from RHIC in the framework of the Dual String Model, in particular when including string fusion. The model, in a simple way, agrees with all the existing data and is consistent with the presence of the percolation transition to the Quark-Gluon Plasma already at the CERN-SPS. It leads to strict saturation of the particle (pseudo-)rapidity density, normalised to the number of participant nucleons, as that number increases. A comparison with recent WA98 data is presented.

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