Suppression of Psi' and J/Psi in High-Energy Heavy-Ion Collisions

Details Suppression of Psi' and J/Psi in High-Energy Heavy-Ion Collisions Suppression of Psi' and J/Psi in High-Energy Heavy-Ion Collisions

1995-06-08

arxiv.org/abs/hep-ph/9506270v3

Phys.Rev.Lett. 76 (1996) 196-199; Erratum-ibid. 76 (1996) 4987

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages (REVTeX), includes 3 uuencoded compressed postscript figures

Scientific paper

10.1103/PhysRevLett.76.196

The experimental ratio of $\psi'$ to $J/\psi$ is approximately a constant in $pA$ collisions, but decreases as the transverse energy increases in nucleus-nucleus collisions. These peculiar features can be explained as arising from approximately the same $c \bar c$-baryon absorption cross section for $\psi'$ and $J/\psi$ but greater disruption probabilities for $\psi'$ than for $J/\psi$ due to the interaction of the $c\bar c$ system with soft particles produced in baryon-baryon collisions.

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