Suppression of J/psi and Psi' Production in High-Energy Pb on Pb Collisions

Preprint

10 July 1996

preprint
Published by arXiv in arXiv

Abstract

The anomalous suppression of J/psi production in Pb-Pb collisions at 158A GeV observed recently by NA50 is explained as due to the transition to a new phase of strong J/psi absorption, which sets in when the local energy density exceeds about 4.0 GeV/fm^3. The observed decrease in psi'/psi in Pb-Pb collisions relative to nucleon-nucleon collisions can be understood as arising from a larger effective cross section for psi' than J/psi for absorption by soft particles and by matter in the new phase.

Keywords

SUPPRESSION OF J/PSI
PB PB COLLISIONS
ABSORPTION
NEW PHASE
ENERGY PB
PSI

All Related Versions

Version 1, 1996-07-10, ArXiv
Version 2, 1996-12-13, ArXiv
Published version: Physical Review C, 55 (5), 2621.

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