The Transverse Momentum Dependence of Anomalous $J/ψ$ Suppression

Details The Transverse Momentum Dependence of Anomalous $J/ψ$ Suppression The Transverse Momentum Dependence of Anomalous $J/ψ$ Suppression

1997-02-06

arxiv.org/abs/hep-ph/9702273v1

Phys.Lett. B405 (1997) 14-19

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages tex-file, 1 PS-Table, 3 PS-Figures

Scientific paper

10.1016/S0370-2693(97)00600-X

In proton-nucleus and nucleus-nucleus collisions up to central $S-U$ interactions, the $P_T$-dependence of $J/\psi$ production is determined by initial state parton scattering and pre-resonance nuclear absorption (``normal" $J/\psi$ suppression). The ``anomalous" $J/\psi$ suppression in $Pb-Pb$ collisions must reduce the normal $P_T$ broadening, since it occurs mainly in the central part of the interaction region, where also initial state parton scattering and nuclear absorption are strongest. We thus expect for $< P_T^2 >$ in $Pb-Pb$ collisions a turn-over and decrease with increasing $E_T$.

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