The equation of state of nuclear matter above saturation density from intermediate energy heavy-ion collisions

Cozma, M. D. (2025) The equation of state of nuclear matter above saturation density from intermediate energy heavy-ion collisions. Il nuovo cimento C, 48 (2). pp. 1-11. ISSN 1826-9885

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Abstract

The dcQMD transport model has been used to study different aspects of the in-medium nucleon-nucleon interaction, in particular the equation of state of nuclear matter by comparing theoretical predictions for nucleonic (stopping, directed and elliptic flows) and pionic (charged multiplicity ratio) observables in heavy-ion collisions at intermediate impact energies to available experimental data measured by the FOPI and SπRIT Collaborations, respectively. These studies have demonstrated the feasibility of constraining the equation of state of both symmetric and asymmetric matter up to twice the saturation density with unprecedented accuracy. Precise values for the compressibility modulus of symmetric matter and slope and L = 63+10 of the symmetry energy were extracted from nucleonic flow data: K0 = 230+9 −11 MeV −13 MeV at 68% CL. The study of charged pion spectral ratios has led to L =79.9±37.6 MeV in full agreement with nucleonic observables. Perspectives on improving the accuracy of these results and probing higher densities with heavy-ion collisions are also discussed.

Item Type: Article
Subjects: 500 Scienze naturali e Matematica > 530 Fisica
Depositing User: Marina Spanti
Date Deposited: 18 Apr 2025 11:55
Last Modified: 18 Apr 2025 11:55
URI: http://eprints.bice.rm.cnr.it/id/eprint/23560

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