Effects of curvature of the symmetry energy in Sn+Sn reactions at 270 MeV/nucleon

TL;DR

This study uses the IBUU transport model to analyze Sn+Sn reactions at 270 MeV/nucleon, revealing that certain observables are sensitive to the symmetry energy's curvature, aiding high-density symmetry energy research.

Contribution

It demonstrates that nucleon and meson observables are sensitive to the curvature of the symmetry energy, providing a new approach to study high-density nuclear symmetry energy.

Findings

Observables are sensitive to the curvature of symmetry energy.

Nucleon and meson observables do not effectively probe high-density symmetry energy.

The study offers a method to extract symmetry energy curvature from experimental data.

Abstract

Based on the Isospin-dependent Boltzmann-Uehling-Uhlenbeck (IBUU) transport model, the isotope Sn+Sn reactions at 270 MeV/nucleon are investigated. It is shown that nucleon and meson observables in the Sn+Sn reactions at 270 MeV/nucleon cannot effectively probe the high-density symmetry energy. These observables, however, are sensitive to the curvature of the symmetry energy. It thus sheds light on the study of the high-density behavior of the nuclear symmetry energy by extracting the curvature of the symmetry energy through the interpretation of forthcoming RIBF/RIKEN related data.