Article Dans Une Revue Physical Review C Année : 2025

Nuclear clustering process in heavy-ion collisions : experimental constraints on the low-temperature region of the QCD phase diagram

Q. Fable
N. Le Neindre

Résumé

In this article, we study the production of Hydrogen and Helium isotopes in heavy-ion collisions in the incident energy range between 80 and 150 MeV/nucleon. We compare their inclusive multiplicities emitted in the transverse plane of the reaction with the predictions given by the thermal model. As a first step, we validate the choice of this approach to describe the experimental measurements. We also show that the transient states have to be explicitly taken into account for a good statistical description of the experimental multiplicities. From the thermodynamical parameter values obtained we complete the existing database built with the use of thermal-statistical models to reproduce particle production in the (ultra-)relativistic-energy measurements. We then proposed a new constraint on the so-called freeze-out region in the temperature (T) versus baryonic chemical potential (muB) phase diagram of the quantum chromodynamics. These new results indicate that there is a common framework to describe the hadron production and nuclear clustering processes in heavy-ion collisions.

Dates et versions

hal-05015296 , version 1 (01-04-2025)

Identifiants

Citer

E. Bonnet, B. Borderie, R. Bougault, A. Chbihi, Q. Fable, et al.. Nuclear clustering process in heavy-ion collisions : experimental constraints on the low-temperature region of the QCD phase diagram. Physical Review C, 2025, 111 (6), pp.064616. ⟨10.1103/7ycv-sqs1⟩. ⟨hal-05015296⟩
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