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    J/psi production in relativistic heavy ion collisions from a multiphase transport model

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    PhysRevC.65.054909.pdf (111.6Kb)
    Date
    2002
    Author
    Zhang, B.
    Ko, Che Ming
    Li, Ba
    Lin, ZW
    Pal, S.
    Metadata
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    Abstract
    Using a multiphase transport model, we study J/psi production from interactions between charm and anticharm quarks in the initial parton phase and between D and (D) over bar mesons in the final hadron phase of relativistic heavy ion collisions at the relativistic heavy ion collider. Including also the inverse reactions of J/psi absorption by gluons and light mesons, we find that the net number of J/psi from the parton and hadron phases is smaller than that expected from the superposition of initial nucleon-nucleon collisions, contrary to the J/psi enhancement predicted by the kinetic formation model. The production of J/psi is further suppressed if one includes the color screening effect in the parton phase. We have also studied the dependence of J/psi production on the charm quark mass and the effective charm meson mass.
    URI
    http://dx.doi.org/10.1103/PhysRevC.65.054909
    https://hdl.handle.net/1969.1/126919
    Description
    Journals published by the American Physical Society can be found at http://publish.aps.org/
    Subject
    QUARK-GLUON PLASMA
    NUCLEAR COLLISIONS
    CHARMONIUM SUPPRESSION
    HADRONIC
    MATTER
    ENERGY
    DISSOCIATION
    PARTON
    ABSORPTION
    PSI'
    QCD
    Physics
    Department
    Physics and Astronomy
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    Citation
    B. Zhang, Che Ming Ko, Ba Li, Z. W. Lin and S. Pal. Phys.Rev.C 65 054909 2002. "Copyright (2002) by the American Physical Society."

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