Transverse Momentum Spectra of $J/\psi$ and ${\psi }^{\prime }$ Mesons from Quark Gluon Plasma Hadronization at CERN SPS

Abstract

A popular derivation of the apparent temperature of the particle transverse momentum spectra and its inconsistency are considered. An improved formula for the apparent temperature is discussed. It is shown that recent results on transverse mass spectra of $J/\psi$ and ${\psi }^{\prime }$ mesons support a hypothesis of statistical production of charmonia at hadronization and suggest the early thermal freeze-out of these mesons. Using the apparent temperature formula the collective transverse velocity of the hadronizing quark gluon plasma is extracted to be $<v_T>\approx 0.2$. Predictions for transverse mass spectra of hidden and open charm mesons along with bottomonium at SPS and RHIC energies are discussed.

Talk given at the Conference ``Strange Quarks in Matter 2001'', Frankfurt, September 24-29, 2001

References in corpus (3)

• Hadron production in Au-Au collisions at RHIC
• Mott effect at the chiral phase transition and anomalous J/Psi suppression
• Open Charm Enhancement in Pb+Pb Collisions at SPS

Cited by in corpus (9)

• Chemical Freeze-out of Strange Particles and Possible Root of Strangeness Suppression
• The Van-der-Waals Gas EOS for the Lorentz Contracted Spheres
• Hadron Spectra and QGP Hadronization in Au+Au Collisions at RHIC
• Boundary Conditions of the Hydro-Cascade Model and Relativistic Kinetic Equations for Finite Domains
• Mid-rapidity dependence of hadron production in $p-p$ and $A-A$ collisions
• Ratio of cross-sections of kaons to pions produced in $pp$ collisions as a function of $\sqrt{s}$
• Resolution of hyper-triton chemical freeze-out puzzle in high energy nuclear collisions
• Ratio of kaon-to-pion production cross-sections in $BeBe$ collisions as a function of $\sqrt{s}$
• Asymptotic Regge Trajectories of Non-strange Mesons