Collision centrality and system size dependences of light nuclei production via dynamical coalescence mechanism

Abstract

Light (anti-)nuclei in relativistic heavy-ion collisions are considered to be formed by the coalescence mechanism of (anti-)nucleons in the present work. Using a dynamical phase-space coalescence model coupled with a multi-phase transport (AMPT) model, we explore the formation of light clusters such as deuteron, triton and their anti-particles in different centralities for ${}^{197}$Au + ${}^{197}$Au collisions at $\sqrt{s_{NN}}=39$ GeV. The calculated transverse momentum spectra of protons, deuterons, and tritons are comparable to those of experimental data from the RHIC-STAR collaboration. Both coalescence parameters $B_2$ for (anti-)deuteron and $B_3$ for triton increase with the transverse momentum as well as the collision centrality, and they are comparable with the measured values in experiments. The effect of system size on the production of light nuclei is also investigated by ${}^{10}$B + ${}^{10}$B, ${}^{16}$O + ${}^{16}$O, ${}^{40}$Ca + ${}^{40}$Ca, and ${}^{197}$Au + ${}^{197}$Au systems in central collisions. The results show that yields of light nuclei increase with system size, while the values of coalescence parameters present an opposite trend. It is interesting to see that the system size, as well as the centrality dependence of $B_A$ ($A$ = 2, 3), falls into the same group, which further demonstrates production probability of light nuclei is proportional to the size of the fireball. Furthermore, we compare our coalescence results with other models, such as the thermal model and analytic coalescence model, it seems that the description of light nuclei production is consistent with each other.

arXiv comment11 pages, 9 figures

References in corpus (56)

• A Multi-Phase Transport Model for Relativistic Heavy Ion Collisions
• Systematic Measurements of Identified Particle Spectra in pp, d+Au and Au+Au Collisions from STAR
• HIJING 1.0: A Monte Carlo Program for Parton and Particle Production in High Energy Hadronic and Nuclear Collisions
• Decoding the phase structure of QCD via particle production at high energy
• Bulk Properties of the Medium Produced in Relativistic Heavy-Ion Collisions from the Beam Energy Scan Program
• Formation of superdense hadronic matter in high energy heavy-ion collisions
• ZPC 1.0.1: a parton cascade for ultrarelativistic heavy ion collisions
• Mapping the Phases of Quantum Chromodynamics with Beam Energy Scan
• Lattice Results on QCD Thermodynamics
• Properties of hot and dense matter from relativistic heavy ion collisions
• Heavy Ion Collisions: Achievements and Challenges
• Exotic Hadrons from Heavy Ion Collisions
• Antinuclei in Heavy-Ion Collisions
• Particle Production in Heavy Ion Collisions
• Light cluster production in intermediate energy heavy-ion collisions induced by neutron-rich nuclei
• Exploiting Intrinsic Triangular Geometry in Relativistic He3+Au Collisions to Disentangle Medium Properties
• Nuclear Clusters as a Probe for Expansion Flow in Heavy Ion Reactions at 10-15AGeV
• Further developments of a multi-phase transport model for relativistic nuclear collisions
• Anomalous chiral transports and spin polarization in heavy-ion collisions
• Deuterons at LHC: "snowballs in hell" via hydrodynamics and hadronic afterburner
• Probing QCD critical fluctuations from light nuclei production in relativistic heavy-ion collisions
• Light nuclei production as a probe of the QCD phase diagram
• Deuteron production from phase-space coalescence in the UrQMD approach
• Beam energy dependence of (anti-)deuteron production in Au+Au collisions at RHIC
• Suppression of light nuclei production in collisions of small systems at the Large Hadron Collider
• Predictions for $\sqrt{s_{NN}}=5.02$ TeV Pb+Pb Collisions from a Multi-Phase Transport Model
• Testing coalescence and statistical-thermal production scenarios for (anti-)(hyper-)nuclei and exotic QCD objects at energies available at the CERN Large Hadron Collider
• Searching for onset of deconfinement via hypernuclei and baryon-strangeness correlations
• Shrinking the Quark Gluon Plasma
• Scaling of Anisotropic Flow and Momentum-Space Densities for Light Particles in Intermediate Energy Heavy Ion Collisions
• Spectra and flow of light nuclei in relativistic heavy ion collisions at RHIC and the LHC
• An experimental review of open heavy flavor and quarkonium production at RHIC
• Exploring New Small System Geometries in Heavy Ion Collisions
• Light Nuclei Production in Au+Au Collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5-200 GeV from JAM model
• Light Nuclei ($d$, $t$) Production in Au + Au Collisions at $\sqrt{s_{NN}}$ = 7.7 - 200 GeV
• Analytical coalescence formula for particle production in relativistic heavy-ion collisions
• Baryon clustering at the critical line and near the hypothetical critical point in heavy-ion collisions
• Beam Energy dependence of Light Nuclei Production in Au+Au Collisions
• Production of antimatter ${}^{5,6}$Li nuclei in central Au+Au collisions at $\sqrt{s_{NN}}=200$ GeV
• Production of multistrange hadrons, light nuclei and hypertriton in central Au+Au collisions at $\sqrt{s_{NN}}=$ 11.5 and 200 GeV
• Disentangle contributions to small-system collectivity via scans of light nucleus-nucleus collisions
• Light nuclei production in relativistic heavy ion collisions from the AMPT model
• System size scan of D meson $R_{\text{AA}}$ and $v_n$ using PbPb, XeXe, ArAr, and OO collisions at LHC
• Dynamical exploring the QCD matter at finite temperatures and densities-a short review
• Feeddown contributions from unstable nuclei in relativistic heavy-ion collisions
• Antimatter ${}_{\Lambda }^4$H Hypernucleus Production and the ${}_{\Lambda }^3$H/${}^3$He Puzzle in Relativistic Heavy-Ion Collisions
• Light-nuclei production and search for the QCD critical point
• Collision system size scan of collective flows in relativistic heavy-ion collisions
• Search for the QCD Critical Point by Transverse Velocity Dependence of Anti-deuteron to Deuteron Ratio
• Particle decay from statistical thermal model in high energy nucleus-nucleus collision
• Critical temperature of deconfinement in a constrained space using a bag model at vanishing baryon density
• Energy Dependence of Light Nuclei ($d$, $t$) Production at STAR
• Nucleon-number scalings of anisotropic flows and nuclear modification factor for light nuclei in the squeeze-out region
• Nuclear system size scan for freeze-out properties in relativistic heavy-ion collisions by using a multiphase transport model
• Relativistic kinetic approach to light nuclei production in high-energy nuclear collisions
• System-size scan of dihadron azimuthal correlations in ultra-relativistic heavy ion collisions

Cited by in corpus (4)

• Investigation of the freeze-out parameters in B-B, O-O, Ca-Ca and Au-Au collisions at 39 GeV
• Momentum correlation of light nuclei in Au + Au collisions at $\sqrt{s_{NN}}$ = 2.0 $\sim$ 7.7 GeV
• Production of light antinuclei in $pp$ collisions by dynamical coalescence and their fluxes in cosmic rays near earth
• Production characteristics of light nuclei, hypertritons and $\Omega$-hypernuclei in Pb+Pb collisions at $\sqrt{s_{NN}}=5.02$ TeV