Impact Parameter Dependence of $J/ψ$ and Drell-Yan Production in Heavy Ion Collisions at $\sqrt{s_{NN}} = 17.3$ GeV
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Open Access Publications from the University of California

## Impact Parameter Dependence of $J/ψ$ and Drell-Yan Production in Heavy Ion Collisions at $\sqrt{s_{NN}} = 17.3$ GeV

• Author(s): Emel'yanov, V
• Khodinov, A
• Klein, SR
• Vogt, R
• et al.

## Published Web Location

https://doi.org/10.1103/PhysRevC.59.1860
Abstract

In heavy-ion collisions, $J/\psi$ and Drell-Yan production are expected to be affected by nuclear modifications to the free nucleon structure functions. If these modifications, known as shadowing, are proportional to the local nuclear density, the per nucleon cross sections will depend on centrality. Differences in quark and gluon shadowing will lead to a new source of impact parameter dependence of the $J/\psi$ to Drell-Yan production ratio. We calculate this ratio in the CERN NA50 acceptance with several shadowing parameterizations to explore its centrality dependence.

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