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Exploring nucleon-nucleon collisions and clusterization within the antisymmetrized molecular dynamics transport model by means of a Bayesian analysis on a dataset from the FAZIA setup

S. Piantelli1,*, A. Camaiani1, G. Poggi2,1, A. Ono3, L. Baldesi2,1, S. Barlini2,1, B. Borderie4, R. Bougault5, G. Casini1 et al. (FAZIA Collaboration)

G. Casini1, C. Ciampi6, Q. Fable6, C. Frosin2,1, J. A. Dueñas7, D. Gruyer5, B. Hong8,9, A. Kordyasz10, N. Le Neindre5, T. Marchi11, S. H. Nam8,9, J. Park8,9, M. Pârlog5,12, G. Pasquali2,1, S. Valdré1, G. Verde13,14, and E. Vient5 (FAZIA Collaboration)

  • *Contact author: silvia.piantelli@fi.infn.it
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Phys. Rev. C 113, 064622 – Published 26 June, 2026

DOI: https://doi.org/10.1103/9z9n-34vz

Abstract

The in-medium nucleon-nucleon cross section and the cluster production are key ingredients in transport models for heavy-ion collisions. They have been constrained by the comparison of predictions of the AMD transport model to experimental data of Ne20+C12 at 50 MeV/nucleon [C. Frosin et al., Phys. Rev. C 107, 044614 (2023)], tuning the related parameters in the framework of a Bayesian inference. Experimental data have been collected with four blocks of the FAZIA setup. A large dataset of observables has been included in the analysis. The prior distribution of the examined parameters was chosen on the basis of the existing literature. The posterior distribution indicates a trend towards a larger number of collisions per event with respect to the previously used simulations.

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Outline

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Phys. Rev. C 113, 064622– Published 26 June, 2026
  • Received 29 October 2025
  • Revised 25 March 2026
  • Accepted 1 June 2026
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Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.

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