Rapidity Dependence of $J/ψ$ Production at RHIC and LHC

Details Rapidity Dependence of $J/ψ$ Production at RHIC and LHC Rapidity Dependence of $J/ψ$ Production at RHIC and LHC

2009-07-16

arxiv.org/abs/0907.2723v1

Physics

Nuclear Physics

Nuclear Theory

4 pages, 2 figures

Scientific paper

The motion of charmonium in heavy ion collisions is described by a three dimensional transport equation with initial production and continuous regeneration in hot medium. The observation of apparently stronger $J/\psi$ suppression at forward rapidity compared to that at midrapidity, so called $J/\psi$ puzzle at RHIC, can well be explained by the competition between the two production mechanisms. At LHC, however, the rapidity dependence of the $J/\psi$ production is dominated by the regeneration process.

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