Sequential Clusterization of Light Nuclei and Hypernuclei in Heavy-Ion Collisions within a Wigner Function Coalescence Framework
Abstract
We investigate the formation of light nuclei and hypernuclei in Au+Au collisions at √(sNN)=3 GeV within a coalescence framework embedded in the microscopic N-body Parton-Hadron-Quantum-Molecular Dynamics (PHQMD) transport model. The Wigner phase-space distributions employed in the coalescence calculation are constructed from realistic N-body wave functions obtained by solving the Schrödinger equation in the hyperspherical harmonics formalism, providing a solid and parameter-free description of nuclear clusters and hypernuclei. By comparing calculated rapidity distributions with STAR data, we extract species-dependent coalescence times, revealing a non-universal formation pattern among different clusters. The resulting yields and kinematic distributions of light nuclei and hypernuclei are systematically analyzed and shown to be sensitive to the underlying wave-function structure and formation time. In addition, we explore cluster-nucleon formation channels for A=4 systems. These additional channels improve the description of 4He and 4ΛH yields and help address the underestimation of A=4 cluster production in theoretical approaches. Finally, we provide predictions for heavier hypernuclei, including 5ΛHe and 5ΛΛHe, which are of interest for future experimental measurements.
Versions
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BibTeX
@misc{han2026sequential,
title = {{Sequential Clusterization of Light Nuclei and Hypernuclei in Heavy-Ion Collisions within a Wigner Function Coalescence Framework}},
author = {Junyi Han and Yue-Hang Leung and Jiaxing Zhao and Yingjie Zhou and Norbert Herrmann and Yaping Wang},
howpublished = {arXiv},
year = {2026},
month = aug,
doi = {10.48550/arxiv.2606.10441},
eprint = {2606.10441},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2606.10441},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Sequential Clusterization of Light Nuclei and Hypernuclei in Heavy-Ion Collisions within a Wigner Function Coalescence Framework
AU - Junyi Han
AU - Yue-Hang Leung
AU - Jiaxing Zhao
AU - Yingjie Zhou
AU - Norbert Herrmann
AU - Yaping Wang
PY - 2026
DA - 2026/08/18
PB - arXiv
DO - 10.48550/arxiv.2606.10441
UR - https://arxiv.org/abs/2606.10441
AB - We investigate the formation of light nuclei and hypernuclei in Au+Au collisions at √(s_NN)=3 GeV within a coalescence framework embedded in the microscopic N-body Parton-Hadron-Quantum-Molecular Dynamics (PHQMD) transport model. The Wigner phase-space distributions employed in the coalescence calculation are constructed from realistic N-body wave functions obtained by solving the Schrödinger equation in the hyperspherical harmonics formalism, providing a solid and parameter-free description of nuclear clusters and hypernuclei. By comparing calculated rapidity distributions with STAR data, we extract species-dependent coalescence times, revealing a non-universal formation pattern among different clusters. The resulting yields and kinematic distributions of light nuclei and hypernuclei are systematically analyzed and shown to be sensitive to the underlying wave-function structure and formation time. In addition, we explore cluster-nucleon formation channels for A=4 systems. These additional channels improve the description of ^4He and ^4_ΛH yields and help address the underestimation of A=4 cluster production in theoretical approaches. Finally, we provide predictions for heavier hypernuclei, including ^5_ΛHe and ^5_ΛΛHe, which are of interest for future experimental measurements.
ER -