Probing the nuclear equation of state with clusters and hypernuclei
Year: 2025
Type: article
Abstract: The study of the nuclear equation of state (EoS) is one of the primary goals of experimental and theoretical heavy-ion physics. The comparison of recent high-statistics data from the STAR Collaboration with transport models provides a unique possibility to address this topic in a yet-unexplored energy domain. Employing the microscopic N -body parton-hadron-quantum-molecular dynamics transport approach, which allows us to describe the propagation and interactions of hadronic and partonic degrees of freedom, including cluster and hypernucleus formation and dynamics, we investigate the influence of different EoS on bulk observables, the multiplicity, p T , and rapidity distributions of protons, Λ s and clusters up to A = 4, as well as their influence on the collective flow. We explore three different EoS: two static EoS, dubbed “soft” and “hard,” which differ in the compressibility modulus, as well as a soft momentum-dependent EoS. We find that a soft momentum-dependent EoS reproduces most baryon and cluster observables, including the flow observables, quantitatively; however, hard EoS show a similar trend.
Source: Physical Review C
DOI: 10.1103/3msm-wrxd
Authors: Yingjie Zhou, Susanne Gläßel, Yue-Hang Leung, Viktar Kireyeu, Jiaxing Zhao, Hui Liu, Christoph Blume, Iouri Vassiliev, Vadim Voronyuk, Michael Winn, Norbert Herrmann, Yaping Wang, Nu Xu, Jörg Aichelin, Elena Bratkovskaya
Institutions: GSI Helmholtz Centre for Heavy Ion Research, Max Planck Institute for Nuclear Physics, Heidelberg University, Joint Institute for Nuclear Research, Goethe University Frankfurt, Huzhou Normal University, Laboratoire de Physique Subatomique et des Technologies Associées, Central China Normal University, Institute of Modern Physics, Frankfurt Institute for Advanced Studies
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W4417210813