Hypernuclei, dibaryon and antinuclei production in high energy heavy ion collisions: Thermal production vs. Coalescence ✩

By J. Steinheimer, K. Gudima, A. Botvina, A. Botvina, I. Mishustin, Marcus Bleicher, H. Stöcker. 2012

162 citations recorded by the source corpus.

Abstract We study the production of (hyper-)nuclei and dibaryons in most central heavy ion collisions at energies of E lab = 1 – 160 A GeV . In particular we are interested in clusters produced from the hot and dense fireball. The formation rate of strange and non-strange clusters is estimated by assuming thermal production from the intermediate phase of the UrQMD-hydro hybrid model and alternatively by the coalescence mechanism from a hadronic cascade model. Both model types are compared in detail. For most energies we find that both approaches agree in their predictions for the yields of the clusters. Only for very low beam energies, and for dibaryons including Ξʼs, we observe considerable differences. We also study the production of anti-matter clusters up to top RHIC energies and show that the observation of anti- He 4 and even anti- He Λ 4 is feasible. We have found a considerable qualitative difference in the energy dependence of the strangeness population factor R H when comparing the thermal production with the coalescence results.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/d9e17761831420dc9a9649c2dd1d361eae82e307

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Nuclear and High Energy Physics

Citations in the corpus

Production of light nuclei and anti-nuclei in pp and Pb-Pb collisions at energies available at the CERN Large Hadron Collider (2015, unknown): “√ A study of the dependence on s NN is of particular interest, because different production mechanisms might dominate at various energies, e.g., a formation via spectator fragmentation at lower energies or via coalescence/thermal mechanisms at higher ones.”
3ΛH and -3Λ-H production in Pb-Pb collisions at √sNN=2.76 TeV (2015, methodology): “…the thermal model approach the S 3 ratio does not depend on the chemical potential of particles and was found to be almost energy independent [1, 61], while in a dynamical coalescence picture it increases with decreasing beam energy and is in general larger than the thermal model predictions [61].”