Studies of the equation-of-state of nuclear matter by heavy-ion collisions at intermediate energy in the multi-messenger era

Russotto, P.; Cozma, M.D.; Filippo, E. De; Févre, A. Le; Leifels, Y.; Łukasik, J.

doi:10.1007/s40766-023-00039-4

Cited by 10 publications

(3 citation statements)

References 239 publications

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“…Concerning this latter experiment, the first reason was that the beam energy was limited to 0.4A GeV. The second reason was that flow of protons could not be discriminated from other hydrogen isotopes, as detailed in [27]. In the future, the priority should be given to experiments that probe higher densities, for both SNM (above 3 n sat ) and ANM (above 1.5 n sat ) components of the EoS, while reducing the experimental uncertainties.…”

Section: Perspectivesmentioning

confidence: 99%

“…In addition, CBM might detect new phases of QCD matter, possibly involving hyperons and, ultimately, the transition to a deconfined quark matter phase at the highest densities. All these perspectives, recently detailed in [27,28], have the potential to revolutionise our understanding of the nuclear EoS and neutron stars.…”

Section: Perspectivesmentioning

confidence: 99%

“…HICs have the potential to provide a precise and complementary information in this lower density range. HIC experiments performed with heavy-ion beam energies of up to few GeV per nucleon, can probe the nuclear EoS mainly in a density range of around 0.5-3n sat [2,3,25], and can provide new input for the global knowledge of the nuclear EoS [26][27][28].…”

Section: Introductionmentioning

confidence: 99%

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Constraining Neutron-Star Matter — Combination of heavy-ion experiments and multi-messenger astronomy

Le Fèvre

2023

EPJ Web of Conf.

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Describing supernova explosions or neutron-star collisions requires a deep understanding of properties of nuclear matter at supra-saturation densities, and extreme neutron over proton asymmetries. So far, our knowledge about dense matter provided by astrophysical observations in the cores of neutron stars remains limited. However, dense nuclear matter is also probed in terrestrial heavy-ion collision (HIC) experiments. We demonstrate how, within a novel approach, using Bayesian inference, combining data from astrophysical multi-messenger observations of neutron stars and from HICs at relativistic energies, one can improve our understanding of dense nuclear matter. The inclusion of HIC data probing the nuclear matter equation-of-state (EoS) at supra-saturation density has the effect of increasing the predicted pressure in the core of neutron stars relative to previous analyses, and shifts the neutron-star radii expectation towards larger values, in accordance with recent observations by the Neutron Star Interior Composition Explorer mission. More remarkable is that, though the sources and methods of observation are orthogonal, the constraints from HIC experiments and multimessenger observations are consistent with each other. It shows that both methods can be complementary at intermediate densities, and strengthen each other. Another conclusion is that in order to be even more constraining, the constraint of the EoS of asymmetric nuclear matter by HIC methods should be improved above twice saturation density, which should be feasible with future experiments with enhanced precision and higher bombarding energy.

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Section: Perspectivesmentioning

confidence: 99%

Section: Perspectivesmentioning

confidence: 99%