Quark number scaling of $p_T$ spectra for $\Omega$ and $\varphi$ in relativistic heavy-ion collisions

Abstract

We show that the experimental data of transverse momentum ($p_T$) spectra of $\Omega$ baryon and $\varphi$ meson at mid-rapidity in heavy-ion collisions exhibit the constituent quark number scaling in a wide energy range from RHIC to LHC. Such a scaling behavior is a direct consequence of quark combination mechanism via equal velocity combination and provides a very convenient way to extract the $p_T$ spectrum of strange quarks at hadronization. We present the results of strange quarks obtained from the available data and study the properties in particular the energy dependence of the averaged transverse momentum $⟨p_T⟩$ and the transverse radial flow velocity $⟨\beta ⟩$ with a hydrodynamics-motivated blast-wave model.

7 pages, 5 figures

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• Strange hadron production in a quark combination model in Au+Au collisions at RHIC energies
• Bayesian Inference of the Specific Shear and Bulk Viscosities of the Quark-Gluon Plasma at Crossover from $\varphi$ and $\Omega$ Observables
• Production characteristics of light (anti-)nuclei from (anti-)nucleon coalescence in heavy ion collisions at energies employed at the RHIC beam energy scan
• Exploring Anisotropic flow via the Boltzmann Transport Equation Employing the Tsallis Blast Wave Description at LHC energies
• Averaged transverse momentum correlations of hadrons in relativistic heavy-ion collisions
• Universal Energy Dependence of Measured Temperatures for Baryons Produced in Heavy-ion Collisions
• Production of Strange and Charm Hadrons in Pb+Pb Collisions at $\sqrt{s_{NN}}=$ 5.02 TeV
• Transverse momentum and multiplicity dependence of ${\Lambda }_c^{+}/D^0$ ratio in $pp$ collisions at $\sqrt{s}=13$ TeV
• The domain of soft hadrons in transverse momentum space in high energy collisions