On J/ψ production in nuclear collisions

  • Data on J/psi production in inelastic proton-proton, proton-nucleus and nucleus-nucleus interactions at 158 A GeV are analyzed and it is shown that the ratio of mean multiplicities of J/psi mesons and pions is the same for all these collisions. This observation is difficult to understand within current models of J/psi production in nuclear collisions based on the assumption of hard QCD creation of charm quarks.

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Author:Marek GaździckiORCiD
Parent Title (German):IKF–HENPG ; 3–98
Series (Serial Number):IKF–HENPG (3-98)
Publisher:Institut für Kernphysik, Goethe-Universität Frankfurt
Place of publication:Frankfurt am Main
Document Type:Working Paper
Date of Publication (online):2005/09/30
Year of first Publication:1998
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2005/09/30
Source:Phys.Rev. C60 (1999), http://arxiv.org/abs/hep-ph/9809412
Institutes:Physik / Physik
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Licence (German):License LogoDeutsches Urheberrecht