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

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...

Quark Gluon Plasma in A+a Collisions at Cern Sps

Searching for Quark Matter at the CERN SPS

This article gives a brief overview of some recent advances in our understanding of the physics of dense strongly interacting matter, from measurements done at the CERN SPS. The presently available results are very interesting, and are likely to reflect the production of a new state of matter in central Pb-Pb collisions, at the highest SPS energies. However, important questions require further ...

Quark liberation and coalescence at CERN SPS

The mischievous linear coalescence approach to hadronization of quark matter is shown to violate strangeness conservation in strong interactions. The simplest correct quark counting is shown to coincide with the non-linear algebraic coalescence rehadronization model, ALCOR. The non-linearity of the ALCOR model is shown to cancel from its simple predictions for the relative yields of (multi-)str...

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