Open and hidden strangeness with kaons and $\phi$-mesons in Bjorken energy density approach for central A+A collisions from SPS to LHC

Abstract

We use the available data on $<dN/dy>$ and $<p_T>$ for the identified hadrons including ${\pi }^{+}+{\pi }^{-}$, $K^{+}+K^{-}$, $p+\overline{p}$, $K^{\ast }(892{)}^0$ and $\phi$-mesons, registered at midrapidity ($|y|<0.5)$ in central 0-5% Au-Au, Pb-Pb and Xe+Xe collisions in a broad range of energies in order to compare the relative contributions to the Bjorken energy density. Particles, like strangeness-neutral $\phi$-meson (a system of $s\overline{s})$ quarks) and K-meson (containing single s-quark), are of specific interest because they might have different production mechanisms and differ in sensitivity to the properties of the QGP-medium formed in relativistic heavy-ion collisions.

Comments: 9 pages, 2 figures, XXV Baldin ISHEPP