2020 Impact factor 3.043
Hadrons and Nuclei
Eur. Phys. J. A 16, 63-69 (2003)
DOI: 10.1140/epja/i2001-10271-3

Transverse-momentum distribution of $\mth{J/\Psi}$'s in Pb-Pb collisions and gluon rescattering

P. Zhuang1 and J. Hüfner2

1  Physics Department, Tsinghua University, Beijing 100084, PRC
2  Institute for Theoretical Physics, University of Heidelberg, D-69120 Heidelberg, Germany

zhuangpf@mail.singhua.edu.cn

(Received: 27 September 2001 / Revised version: 7 July 2002 / Published online: 17 January 2003)

Abstract
We study anomalous $J/\Psi$ suppression and $p_{\rm t}$ broadening in the model of prompt gluons. The anomalous suppression can be successfully described in this model. The transverse-momentum dependence of $J/\Psi$ suppression in relativistic heavy-ion collisions is calculated from initial-state gluon rescattering with both nucleons and prompt gluons produced in nucleon-nucleon collisions in the early phase of the reaction. It seems impossible to describe simultaneously anomalous suppression and $p_{\rm t}$ broadening in Pb-Pb collisions within the model of prompt gluons with reasonable values of the parameters.

PACS
25.75.-q - Relativistic heavy-ion collisions.
12.38.Mh - Quark-gluon plasma.

© Società Italiana di Fisica, Springer-Verlag 2003