Energy scan by $φ$ mesons and threshold energy for the confinement-deconfinement phase transition

Details Energy scan by $φ$ mesons and threshold energy for the confinement-deconfinement phase transition Energy scan by $φ$ mesons and threshold energy for the confinement-deconfinement phase transition

2010-02-22

arxiv.org/abs/1002.4072v3

Physics

Nuclear Physics

Nuclear Theory

Revised version to be published in Phys. Lett. B. 5 pages, 6 figures.

Scientific paper

We argue that the ratio of $\phi$ mesons multiplicity over cube of the mean $p_T$ is proportional to the degeneracy of the medium produced in ultra-relativistic heavy ion collisions. The ratio extracted from the existing $\phi$ meson data in the energy range $\sqrt{s}$=6.3-200 GeV, indicate that beyond a threshold energy $\sqrt{s}_{th}=15.74\pm 8.10$ GeV, the medium crosses over from a confined phase to a deconfined phase.

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