Freeze-out conditions for production of resonances, hadronic molecules, and light nuclei

Abstract

We investigate the freeze-out conditions of a particle in an expanding system of interacting particles in order to understand the productions of resonances, hadronic molecules and light nuclei in heavy ion collisions. Applying the kinetic freeze-out condition with explicit hydrodynamic calculations for the expanding hadronic phase to the daughter particles of $K^{\ast }$ mesons, we find that the larger suppression of the yield ratio of $K^{\ast }/K$ at LHC than at RHIC compared to the expectations from the statistical hadronization model based on chemical freeze-out parameters reflects the lower kinetic freeze-out temperature at LHC than at RHIC. Furthermore, we point out that for the light nuclei or hadronic molecules that are bound, the yields are affected by the freeze-out condition of the respective particle in the hadronic matter, which leads to the observation that the deuteron production yields are independent of the size of deuteron, and depend only on the number of ground state constituents.

5 pages, 1 figure

References in corpus (10)

• Big-Bang Nucleosynthesis
• The QCD equation of state with dynamical quarks
• Scale for the Phase Diagram of Quantum Chromodynamics
• Production of light nuclei and anti-nuclei in pp and Pb-Pb collisions at LHC energies
• K*(892)${}^0$ and $\Phi$(1020) production in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV
• Hadronic resonance production and interaction in partonic and hadronic matter in EPOS3 with and without the hadronic afterburner UrQMD
• Centrality dependence of hadronization and chemical freeze-out conditions in heavy ion collisions at \sqrt s_{NN} = 2.76 TeV
• $D_{sJ}$(2317) meson production at RHIC
• Jozso's Legacy: Chemical and Kinetic Freeze-out in Heavy-Ion Collisions
• Dilepton production in a schematic causal viscous hydrodynamics

Cited by in corpus (9)

• Hadronic molecules
• Exotic Hadrons from Heavy Ion Collisions
• Loosely-bound objects produced in nuclear collisions at the LHC
• Spectra and flow of light nuclei in relativistic heavy ion collisions at RHIC and the LHC
• Nucleosynthesis in heavy-ion collisions at the LHC via the Saha equation
• Kinetic freeze-out temperature from yields of short-lived resonances
• Light nuclei production in relativistic heavy ion collisions from the AMPT model
• $K_1/K^{\ast }$ enhancement as a signature of chiral symmetry restoration in heavy ion collisions
• Different production sources of light nuclei in relativistic heavy-ion collisions