Dynamics of identified particles production in oxygen-oxygen collisions at \sqrt{s_{\mathrm{NN}} = 7 TeV using EPOS4

Abstract

The Large Hadron Collider (LHC) aims to inject oxygen (${}^{16}O$) ions in the next run into its experiments. This include the anticipated one-day physics run focusing on $OO$ collisions at center-of-mass energy \sqrt{s_{\mathrm{NN}} = 7 Tev. In this study, we have used recently developed version of the EPOS (EPOS4) to study the production of identified particles (${\pi }^{\pm }$, $K^{\pm }$ and $p(\overline{p})$) in $OO$ collisions at 7 Tev. Predictions of transverse momentum ($p_T$) spectra, $⟨p_T⟩$, integrated yield (dN/dy) for different centrality classes are studied. To provide insight into the collective nature of the produced particles, we look into the $p_T$-differential particle ratios ($K/\pi$ and $p/\pi$) and $p_T$-integrated particle ratios to (${\pi }^{+}+{\pi }^{-}$) as a function of charge particle multiplicity. The shape of the charge particle multiplicity ($dN/d\eta$) and $⟨p_T⟩$ is well described by the EPOS4. The EPOS4 predictions for the ratios of $K/\pi$ and $p/\pi$ exhibit a systematic overestimation compared to the observed trends as a function of charged-particle multiplicity. Interestingly, the $OO$ results of $p_T$-integrated particle ratios shows a clear final state multiplicity overlap with $pp$, $p-Pb$ and $Pb-Pb$ collisions. EPOS4 mimics signs of collectivity and is one of the suitable candidates to study ultra-relativistic heavy-ion collisions. Furthermore, the foreseen data from $OO$ collisions at the LHC, when available, will help to better understand the heavy-ion-like behavior in small systems as well as help to put possible constraints on the model parameters.

10 pages, 8 figures

References in corpus (10)

• Systematic Measurements of Identified Particle Spectra in pp, d+Au and Au+Au Collisions from STAR
• Core-Corona Separation in Ultra-Relativistic Heavy Ion Collisions
• Observation of a "Ridge" correlation structure in high multiplicity proton-proton collisions: A brief review
• An overview of the experimental study of quark-gluon matter in high-energy nucleus-nucleus collisions
• Core-corona procedure and microcanonical hadronization to understand strangeness enhancement in proton-proton and heavy ion collisions in the EPOS4 framework
• Glauber Monte Carlo predictions for ultra-relativistic collisions with ${}^{16}\mathrm{O}$
• Predictions on global properties in O+O collisions at the Large Hadron Collider using a multi-phase transport model
• Multiplicity dependence of charged-particle production in pp, p-Pb, Xe-Xe and Pb-Pb collisions at the LHC
• Alpha-like clustering in ${}^{20}$Ne from a quartetting wave function approach
• Characterizing nuclear modification effects in high-energy O-O collisions at energies available at the CERN Large Hadron Collider: A transport model perspective

Cited by in corpus (2)

• Multiplicity dependence of (multi)strange hadrons in oxygen-oxygen collisions at $\sqrt{s_{\mathrm{NN}}}=7$ TeV using EPOS4 and AMPT
• Strangeness production in $O+O$ collisions at $\sqrt{s_{\mathrm{NN}}}=7$ TeV using various model approaches