The Role of Gluon Depletion in J/psi Suppression

Details The Role of Gluon Depletion in J/psi Suppression The Role of Gluon Depletion in J/psi Suppression

1997-02-25

arxiv.org/abs/nucl-th/9702051v1

Phys.Rev.C56:432-438,1997

Physics

Nuclear Physics

Nuclear Theory

12 pages + 2 figures (in ps file), LaTex, Submitted to Phys. Rev. C

Scientific paper

10.1103/PhysRevC.56.432

The depletion of gluons as the parton flux traverses a nucleus in a heavy-ion collision can influence the production rate of heavy-quark states. Thus the suppression of $J/\psi$ can be due to gluon depletion in the initial state in addition to nuclear and hadronic absorption in the final state. A formalism is developed to describe the depletion effect. It is shown that, without constraints from other experimental facts beside the $J/\psi$ suppression data in $pA$ and $AB$ collisions, it is not possible to determine the relative importance of depletion vs absorption. Possible relevance to the enhanced suppression seen in the $Pb - Pb$ data is mentioned but not studied.

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