Charmonium Production in gamma-A, p-A and A-A

L. Gerland

doi:10.1088/0954-3899/30/1/058

Charmonium Production in gamma-A, p-A and A-A

Nuclear Theory 2009-11-10 v1

Authors: L. Gerland

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Abstract

The data for the production of the $\psi'$ meson in pA collisions at 450 GeV at CERN-SPS (of the NA50-collaboration) yields $\sigma(\psi' N)\approx 8$ mb under the assumption that the $\psi'$ is produced as a result of the space-time evolution of a point-like $c\bar c$ pair which expands with time to the full size of the charmonium state. However, much higher values of $\sigma(\psi' N)$ are not ruled out by the data. We show that recent CERN data confirm the suggestion that color fluctuations are the major source of suppression of the $J/\psi$ yield as observed at CERN in both pA and AA collisions.

Keywords

charmonium production psi prime j/psi suppression color fluctuations proton-nucleus collisions nucleus-nucleus collisions

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@article{arxiv.nucl-th/0307110,
  title  = {Charmonium Production in gamma-A, p-A and A-A},
  author = {L. Gerland},
  journal= {arXiv preprint arXiv:nucl-th/0307110},
  year   = {2009}
}

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7 pages, 3 figures, talk given at the Strange Quark Matter Conference, Atlantic Beach, North Carolina, March 12-17, 2003

Charmonium Production in gamma-A, p-A and A-A

Abstract

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