Regular Article - Theoretical Physics
Forward and midrapidity charmonium production at RHIC
Cyclotron Institute and Physics Department, Texas A&M University, College Station, TX, 77843-3366, USA
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Published online: 21 February 2009
J/ψ production at forward and midrapidity at the Relativistic Heavy-Ion Collider (RHIC) is calculated within a previously constructed rate-equation approach accounting for both direct production and regeneration from c and . The results are compared to the experimental data. The observed stronger suppression at forward rapidity can be qualitatively explained by a smaller statistical regeneration component together with stronger cold nuclear matter induced suppression compared to midrapidity. The χ c over J/ψ ratio and ψ′ over J/ψ ratio are also calculated.
PACS: 12.38.Mh – / 25.75.-q – / 14.40.Lb –
© Springer-Verlag , 2009