The Relative $J/Ψ$ to $Ψ'$ Suppression in Proton-Nucleus and Nucleus-Nucleus Collisions

Details The Relative $J/Ψ$ to $Ψ'$ Suppression in Proton-Nucleus and Nucleus-Nucleus Collisions The Relative $J/Ψ$ to $Ψ'$ Suppression in Proton-Nucleus and Nucleus-Nucleus Collisions

1995-04-24

arxiv.org/abs/hep-ph/9504379v1

Phys.Rev.Lett. 76 (1996) 192-195

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, LATEX, 3 uuencoded figures

Scientific paper

10.1103/PhysRevLett.76.192

We calculate the nuclear suppression for $J/\Psi$ and $\Psi'$ production within a coupled channel approach in the subspace of the $J/\Psi$ and $\Psi'$ states. We are able to explain, why (i) the $J/\Psi$ and $\Psi'$ show the same suppression from $200\ GeV$ to $800\ GeV$ in proton-nucleus collisions and why (ii) the $\Psi'$ is absorbed more strongly than the $J/\Psi$ in nucleus-nucleus collisions at $200\ GeV$. The numerical result which includes only interactions with nucleons acconts for half of the observed suppression in sulphur-uranium collisions.

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