Investigating the cluster production mechanism with isospin triggering: Thermal models versus coalescence models

Abstract

Isospin triggering allows to distinguish coalescence from thermal production of light clusters in heavy ion collisions. Triggering on $Y({\pi }^{-})-Y({\pi }^{+})$ allows to select very neutron or proton rich final states. The deuteron (cluster) production with coalescence ($d\propto n\cdot p$) leads then to an inverse parabolic dependence of the deuteron yield on $\Delta Y_{\pi }$. In contrast, in a thermal model, cluster production is independent on $\Delta Y_{\pi }$. The observation of a maximum deuteron (cluster) yield as function of $\Delta Y_{\pi }$ provides confirmation of the coalescence mechanism.

arXiv comment6 pages, 5 figures, version accepted and published by Physical Review C

References in corpus (33)

• GW170817: Measurements of Neutron Star Radii and Equation of State
• Microscopic Models for Ultrarelativistic Heavy Ion Collisions
• Relativistic Hadron-Hadron Collisions in the Ultra-Relativistic Quantum Molecular Dynamics Model (UrQMD)
• The chiral and deconfinement aspects of the QCD transition
• Is there still any Tc mystery in lattice QCD? Results with physical masses in the continuum limit III
• Comparison of Chemical Freeze-Out Criteria in Heavy-Ion Collisions
• Production of light nuclei, hypernuclei and their antiparticles in relativistic nuclear collisions
• Thermal Hadron Production in High Energy Heavy Ion Collisions
• Thermal-FIST: A package for heavy-ion collisions and hadronic equation of state
• Light cluster production in intermediate energy heavy-ion collisions induced by neutron-rich nuclei
• Simulated Annealing Clusterization Algorithm for Studying the Multifragmentation
• Nuclear Clusters as a Probe for Expansion Flow in Heavy Ion Reactions at 10-15AGeV
• Deuteron production from phase-space coalescence in the UrQMD approach
• Hadron production and QGP Hadronization in Pb--Pb collisions at $\sqrt{s_{NN}}=2.76$ TeV
• Hadron multiplicities and chemical freeze-out conditions in proton-proton and nucleus-nucleus collisions
• The thermal proton yield anomaly in Pb-Pb collisions at the LHC and its resolution
• Multiplicity dependence of light nuclei production at LHC energies in the canonical statistical model
• Light (anti-)nuclei production and flow in relativistic heavy-ion collisions
• Production of light nuclei in the thermal and coalescence models
• Cluster and hyper-cluster production in relativistic heavy-ion collisions within the Parton-Hadron-Quantum-Molecular-Dynamics approach
• Probing neutron-star matter in the lab: similarities and differences between binary mergers and heavy-ion collisions
• Multiplicity Scaling of Light Nuclei Production in Relativistic Heavy-Ion Collisions
• Light nuclei production in relativistic heavy ion collisions from the AMPT model
• Coalescence, the thermal model and multi-fragmentation: The energy and volume dependence of light nuclei production in heavy ion collisions
• Feeddown contributions from unstable nuclei in relativistic heavy-ion collisions
• Statistical hadronization model for heavy-ion collisions in a few GeV energy regime
• Phasespace Correlations of Antideuterons in Heavy Ion Collisions
• Probing chemical freeze-out criteria in relativistic nuclear collisions with coarse grained transport simulations
• Ambiguities in the hadro-chemical freeze-out of Au+Au collisions at SIS18 energies and how to resolve them
• Delta mass shift as a thermometer of kinetic decoupling in Au+Au reactions at 1.23 AGeV
• 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
• $\Delta$ resonances in Ca+Ca, Ni+Ni and Au+Au reactions from 1 AGeV to 2 AGeV: Consistency between yields, mass shifts and decoupling temperatures