Transverse Momentum Spectra of $J/ψ$ and $ψ^{\prime}$ Mesons from Quark Gluon Plasma Hadronization in Nuclear Collisions

K. A. Bugaev; M. Gazdzicki; M. I. Gorenstein

doi:10.1016/s0370-2693(01)01341-7

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arXiv · hep-ph/0106342

Transverse Momentum Spectra of $J/ψ$ and $ψ^{\prime}$ Mesons from Quark Gluon Plasma Hadronization in Nuclear Collisions

K. A. Bugaev·M. Gazdzicki·M. I. Gorenstein

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Abstract

Recent results on transverse mass spectra of $J/ψ$ and $ψ^{\prime}$ mesons in central Pb+Pb collisions at 158 A$\cdot$GeV are considered. It is shown that those results support a hypothesis of statistical production of charmonia at hadronization and suggest the early thermal freeze--out of $J/ψ$ and $ψ^{\prime}$ mesons. Based on this approach the collective transverse velocity of hadronizing quark gluon plasma is estimated to be $ \approx 0.2$. Predictions for transverse mass spectra of hidden and open charm mesons at SPS and RHIC are discussed.

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K. A. Bugaev, M. Gazdzicki, M. I. Gorenstein. 2001-07-14. Transverse Momentum Spectra of $J/ψ$ and $ψ^{\prime}$ Mesons from Quark Gluon Plasma Hadronization in Nuclear Collisions. https://doi.org/10.1016/s0370-2693(01)01341-7

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