Probing the incompressibility of dense hadronic matter near QCD phase transition in relativistic heavy-ion collisions

Abstract

Based on the extended hadronic transport model of relativistic heavy-ion collisions, the incompressibility of dense hadronic matter created in relativistic Au+Au heavy-ion collisions at $\sqrt{s_{NN}}=3$ GeV is studied. By comparing experimental proton directed flow, productions of strange hadrons $\varphi$, $K^{-}$ as well as their ratio $\varphi /K^{-}$, proton high-order cumulants to the model calculations, a large incompressibility of dense hadronic matter is obtained from nucleon observabels while a rather small incompressibility is needed to fit the data of strange hadrons. This may indicate hadronic matter possesses different incompressibilities in different density regions, i.e., the incompressibility may become stiffer from saturation density to a certain baryon density and then turn to soft before reaching hadron-quark phase transition. The study also shows that the incompressibility significantly affects the critical baryon density of hadron-quark phase transition.

5 pages, 4 figures, accepted by PRC, in production

References in corpus (10)

• Phase transitions in the early and the present Universe
• Further developments of a multi-phase transport model for relativistic nuclear collisions
• The high-density equation of state in heavy-ion collisions: Constraints from proton flow
• Effects of a phase transition on two-pion interferometry in heavy-ion collisions at $\sqrt{s_{\mathrm{NN}}}=2.4-7.7$ GeV
• Directed flow of $\Lambda$ in high-energy heavy-ion collisions and $\Lambda$ potential in dense nuclear matter
• Hadron-quark mixed phase in the quark-meson coupling model
• Probing Strangeness Canonical Ensemble with $K^{-}$, $\varphi (1020)$ and ${\Xi }^{-}$ Production in Au+Au Collisions at $\sqrt{s_{\mathrm{NN}}}=3\mathrm{GeV}$
• Probing high-density nuclear symmetry energy with ${\Xi }^{-}/{\Xi }^0$ ratio in heavy-ion collisions at $\sqrt{s_{NN}}\sim 3$ GeV
• Double strangeness ${\Xi }^{-}$ production as a probe of nuclear equation of state at high densities
• Probing the boundary of phase transition of nuclear matter using proton flows in heavy-ion collisions at 2-8 GeV/nucleon

Cited by in corpus (6)

• Anti-flow of Mesons in the High Baryon Density Region
• Examination of STAR fixed-target data on directed flow at $\sqrt{s_{NN}}=$ 3 and 4.5 GeV
• Violation of NCQ scaling in hadron elliptic flow in Au+Au collisions at $\sqrt{s_{NN}}=3.0-7.7GeV
• Predictions of baryon directed flow in heavy-ion collisions at high baryon density
• ${\Omega }^{-}$ production as a probe of equation of state of dense matter near the QCD phase transition in relativistic heavy-ion collisions
• Investigation of the Spectator Effect on Light Nuclei Production in Nucleus-Nucleus Collisions at High Baryon Density Region