First indication on self-similarity of strangeness production in $Au+Au$ collisions at RHIC: Search for signature of phase transition in nuclear matter

TL;DR

This paper investigates the self-similarity in strangeness production in gold-gold collisions at RHIC, suggesting potential signatures of phase transition in nuclear matter through analysis of $K^0_S$ spectra across various energies and centralities.

Contribution

It introduces the application of the $z$-scaling approach to analyze $K^0_S$ spectra, revealing fractal self-similarity in nuclear and fragmentation processes at RHIC energies.

Findings

Evidence of self-similarity in strangeness production

Estimation of energy loss dependence on collision parameters

Indications of phase transition signatures

Abstract

New results of analysis of $K^0_S-$meson spectra measured over a wide range of energy $\sqrt {s_{NN}}=7.7-200$ GeV and centrality in $Au+Au$ collisions by the STAR Collaboration at RHIC using the $z$-scaling approach are presented. Indication on self-similarity of fractal structure of nuclei and fragmentation processes with $K^0_S$ probe is demonstrated. The energy loss as a function of the collision energy, centrality and transverse momentum of the inclusive strange meson is estimated.