Modeling (anti)deuteron formation at RHIC with a geometric coalescence model

Abstract

We study (anti)deuteron formation rates in heavy-ion collisions in the framework of a wave-function based coalescence model. The main feature of our model is that nucleons are emitted from the whole spherically symmetric fireball volume, while antinucleons are emitted only from a spherical shell close to the surface. In this way, the model accounts for nucleon-antinucleon annihilations in the center of the reaction at lower beam energies. Comparison with experimental data on the coalescence parameter in the range $\sqrt{s_{NN}}=4.7-200$ GeV allows us to extract radii of the respective source geometries. Our results are qualitatively supported by data from the UrQMD transport model which shows a comparable trend in the geometric radii as a function of beam energy. In line with our expectations, we find that at lower energies, the central region of the fireball experiences stronger annihilation than at higher energies.

arXiv comment9 pages, 9 figures, submitted to Physica Scripta as a conference proceeding of the 9thInternational Conference on New Frontiers in Physics(2020)

References in corpus (26)

• Microscopic Models for Ultrarelativistic Heavy Ion Collisions
• Relativistic Hadron-Hadron Collisions in the Ultra-Relativistic Quantum Molecular Dynamics Model (UrQMD)
• Two-pion Bose-Einstein correlations in central Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV
• Light Nuclei and Hypernuclei from Quantum Chromodynamics in the Limit of SU(3) Flavor Symmetry
• Properties of Strange Hadronic Matter in Bulk and in Finite Systems
• Hypernuclei, dibaryon and antinuclei production in high energy heavy ion collisions: Thermal production vs. Coalescence
• The Deuteron and Exotic Two-Body Bound States from Lattice QCD
• Antinuclei in Heavy-Ion Collisions
• Light cluster production in intermediate energy heavy-ion collisions induced by neutron-rich nuclei
• Helium nuclei, deuteron and dineutron in 2+1 flavor lattice QCD
• Deuteron production from phase-space coalescence in the UrQMD approach
• Beam energy dependence of (anti-)deuteron production in Au+Au collisions at RHIC
• Transverse energy production and charged-particle multiplicity at midrapidity in various systems from $\sqrt{s_{NN}}=7.7$ to 200 GeV
• Light (anti-)nuclei production and flow in relativistic heavy-ion collisions
• The statistical model in Pb-Pb collisions at the LHC
• Production of light nuclei in the thermal and coalescence models
• Deep sub-threshold $\Xi$ and $\Lambda$ production in nuclear collisions with the UrQMD transport model
• Antideuteron yield at the AGS and coalescence implications
• First, second, third and fourth flow harmonics of deuterons and protons in Au+Au reactions at 1.23 A GeV
• A model-independent Dalitz plot analysis of $B^{\pm }\to D{K}^{\pm }$ with $D\to K_{\mathrm{S}}^0{h}^{+}{h}^{-}$ ($h=\pi ,K$) decays and constraints on the CKM angle $\gamma$
• Production of light nuclei at colliders -- coalescence vs. thermal model
• Elliptic flow of deuterons in relativistic heavy-ion collisions
• Deuterons and space-momentum correlations in high energy nuclear collisions
• Understanding the energy dependence of $B_2$ in heavy ion collisions: Interplay of volume and space-momentum correlations
• Deuteron and Antideuteron Coalescence in Heavy-Ion Collisions: Energy Dependence of the Formation Geometry
• QCD phases at high density and instantons

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