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The European Physical Journal C

, Volume 55, Issue 3, pp 449–461 | Cite as

A systematic study of J/ψ suppression in cold nuclear matter

  • F. Arleo
  • V.-N. Tram
Regular Article - Theoretical Physics

Abstract

Understanding the effects of cold nuclear matter on J/ψ production is a key requirement for interpreting the J/ψ suppression reported in heavy-ion collisions. Based on a Glauber model, the J/ψ–nucleon inelastic cross section is determined from a statistical analysis of the J/ψ world data on nuclear targets. The global fit of all data gives σJ/ψN = 3.4 ± 0.2 mb, significantly smaller than previous estimates, yet the χ2 of the fit is pretty large, χ2/ndf=1.5. A similar value, σJ/ψN = 3.5 ± 0.2 ± 1.7 mb, is obtained when the De Florian–Sassot modifications of the nuclear parton densities are included in the analysis, although we emphasise that the present uncertainties on gluon (anti-) shadowing do not allow for a precise determination of σJ/ψN. Finally, the possible energy dependence of the J/ψ–nucleon inelastic cross section is investigated within this framework. No significant energy dependence of the J/ψ–N interaction is observed.

Keywords

Production Cross Section Deep Inelastic Scattering Inelastic Cross Section Glauber Model Charmonium Production 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag / Società Italiana di Fisica 2008

Authors and Affiliations

  1. 1.PH Department, TH DivisionCERNGeneva 23Switzerland
  2. 2.Laboratoire d’Annecy-le-Vieux de Physique Théorique (LAPTH)UMR 5108 du CNRS associée à l’Université de SavoieAnnecy-le-Vieux CedexFrance
  3. 3.Laboratoire Leprince-RinguetEcole PolytechniquePalaiseau CedexFrance
  4. 4.Lawrence Berkeley National LaboratoryBerkeleyUSA

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