Transverse momentum spectra of J/$\psi$ and $\psi$$prime$ mesons from quark gluon plasma hadronization at CERN SPS

Transverse Momentum Spectra of J/ψ and ψ Mesons from Quark Gluon Plasma Hadronization at CERN SPS

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/ψ and ψ′ mesons support a hypothesis of statistical production of charmonia at hadronization and suggest the early thermal freeze-out of th...

Quark Gluon Plasma in A+a Collisions at Cern Sps

New form of matter at CERN SPS: Quark Matter but not Quark Gluon Plasma

I argue that a new form of matter is indeed seen in Pb+Pb collisions at CERN SPS. This Quark Matter (QM) is different from the theoretically predicted Quark Gluon Plasma (QGP) because its effective degrees of freedom seem to be the massive (dressed) constituent quarks instead of almost massless quarks and gluons. The equation of state of QM is hard, the time of its rehadronization is short, whi...

Statistical hadronization of supercooled quark-gluon plasma

The fast simultaneous hadronization and chemical freeze-out of supercooled quark-gluon plasma, created in relativistic heavy ion collisions, can lead to the reheating of the expanding matter and to the change in a collective flow profile. We use the assumption of statistical nature of the hadronization process, and study quantitatively the freeze-out in the framework of hydrodynamical Bjorken m...

The production of charm mesons from quark matter at CERN SPS and RHIC

We study the production of charm mesons and other charm baryons from quark matter at CERN SPS and RHIC energies. Using quark coalescence models as hadronization mechanism, we predict particle ratios, absolute yields and transverse momentum spectra. PACS numbers: 12.38.Mh, 13.87.Fh, 24.85.+p