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Transverse Momentum Dependence of Anomalous J/ψSuppression in Pb-Pb Collisions

Joerg Huefner·Pengfei Zhuang
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Abstract

The recently published data for $ $ for $J/ψ$ production in Pb-Pb collisions at 158 A GeV are analyzed. For low values of transverse energy $E_t$, where normal suppression dominates, $ (E_t)$ scales with the path length of the gluons which fuse to make the $J/ψ$. In the $E_t$ domain of anomalous suppression $ (E_t)$ is found to rise linearly with the relative amount of anomalous suppression. This empirical law is reproduced within an analytically solvable transport model which allows high $p_t$ $J/ψ$'s to escape anomalous suppression. Interpreted in this way, the data for $ (E_t)$ lead to an estimate of $t_A \sim 4$ fm/$c$ for the duration of anomalous suppression.

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Joerg Huefner, Pengfei Zhuang. 2001-06-28. Transverse Momentum Dependence of Anomalous J/ψSuppression in Pb-Pb Collisions. https://doi.org/10.1016/s0370-2693(01)00864-4

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