1993/02/16 by M. A. Doncheski, Doncheski, M. A., M. B. Gay Ducati +3
Computer Science · Physics and Astronomy · #Algorithms and Data Compression #Computational Physics and Python Applications #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Particle physics theoretical and experimental studies #hep-ph
paper · pdf · doi:10.48550/arxiv.hep-ph/9302263
16 pages (6 figures not included - available from the authors), MAD/PH/742
arxiv created 1993/02/16 · openalex publication_date 1993/02/16 · arxiv updated 2009/11/30 · openalex created_date 2024/04/10 · openalex updated_date 2026/07/28
It has been suggested that the suppression of J/ψ production in heavy nuclei is a signature of the formation of quark-gluon plasma. We here show that this phenomenon can be understood in terms of conventional physics, \it i.e. \it i) perturbative QCD, \it ii) the parton recombination implementation of shadowing in the initial state, and \it iii) final state interactions with the hadronic debris of the nuclear target. Unlike previous calculations we include both the direct J/ψ production and its production via radiative χ decays (χJ → J/ψ+ γ). We are able to reproduce the experimental data including their small-x behavior. We emphasize the importance of studying the x2-dependence of the ratio σ(b A)/σ(b N), where b designates the beam and x2 is the momentum fraction of the parton from the nuclear target.