Erratum: Probing neutron-proton dynamics by pions [Phys. Rev. C 93, 044612 (2016)]

Ikeno, Natsumi; Ono, Akira; Nara, Yasushi; Ohnishi, Akira

doi:10.1103/physrevc.97.069902

Cited by 35 publications

(82 citation statements)

References 28 publications

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“…The statistical uncertainties in the final π − /π + ratio are smaller than 0.03. Reprinted from [182], with kind permission of the APS. pressibility and on the role of many-body correlations (like clustering effects), observables connected to isospin transport give constraints on the low-density behavior of the symmetry energy, but also probe the reaction dynamics.…”

Section: Discussionmentioning

confidence: 99%

Collision dynamics at medium and relativistic energies

Colonna

2020

Progress in Particle and Nuclear Physics

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Recent results connected to nuclear collision dynamics, from low up to relativistic energies, are reviewed. Heavy ion reactions offer the unique opportunity to probe the complex nuclear manybody dynamics and to explore, in laboratory experiments, transient states of nuclear matter under several conditions of density, temperature and charge asymmetry. From the theoretical point of view, transport models are an essential tool to undertake these investigations and make a connection betwen the nuclear effective interaction and sensitive observables of experimental interest. In this article, we mainly focus on the description of results of transport models for a selection of reaction mechanisms, also considering comparisons of predictions of different approaches. This analysis can help understanding the impact of the interplay between mean-field and correlation effects, as well as of in-medium effects, on reaction observables, which is an essential point also for extracting information on the nuclear Equation of State. A special emphasis will be given to the review of recent studies aimed at constraining the density behavior of the nuclear symmetry energy. For reactions at medium (Fermi) energies, we will describe light particle and fragment emission mechanisms, together with isospin transport effects. Collective effects characterizing nuclear collision dynamics, such as transverse and elliptic flows, will be discussed for relativistic heavy ion reactions, together with meson production and isotopic ratios.

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Section: Discussionmentioning

confidence: 99%

Collision dynamics at medium and relativistic energies

Colonna

2020

Progress in Particle and Nuclear Physics

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“…Within transport theory calculations, subthreshold pions are produced at the highest density via the excitation and decay of Δ resonances. Despite this agreement about the basic pion production mechanism, there are discrepancies in published transport theoretical predictions for / π π − + pion ratios [13,17,18,26].…”

Section: IImentioning

confidence: 95%

“…To gain additional sensitivity to the EoS and symmetry energy at high densities, / π π − + yield and spectral ratios have been proposed to probe the symmetry energy at supra-normal density [13,17,25]. Within transport theory calculations, subthreshold pions are produced at the highest density via the excitation and decay of Δ resonances.…”

Section: IImentioning

confidence: 99%

“…Detailed accounting for the decay and formation matrix elements shows that nn collisions and pp collisions are primarily responsible for and production, respectively. Measurements of negative and positive pions therefore reflect the neutron and proton abundance in the high-density overlap region [13,17] and in turn, the symmetry energy, which in neutron-rich regions expels neutrons and attracts protons. While some information can be lost by pion rescattering and reabsorption, energetic pions are predicted to retain information about the symmetry energy and its mean field potentials.…”

Section: ∫ ∫mentioning

confidence: 99%

“…We note that pion production has been recently explored within variants of different transport models such as the Boltzman-Uehling-Uhlenbeck (BUU) equation [13,14], Quantum Molecular Dynamics approaches (QMD) [15,16] and the Anti-Symmetrized Molecular Dynamics (AMD) model [17]. Most of these calculations have computed the ratio of the total yield of negative pions to the total yield of positive pions.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Pion production in rare-isotope collisions

et al. 2017

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Pion energy spectra are presented for central collisions of neutron-rich 132 Sn+ 124 Sn and neutron-deficient 108 Sn+ 112 Sn systems using simulations with Boltzmann-Uehling-Uhlenbeck transport model. These calculations, which incorporate isospin-dependent mean field potentials for relevant baryons and mesons, display a sensitivity to the pion spectra that could allow significant constraints on the density dependence of the symmetry energy and its mean field potential at supra-saturation densities. The predicted sensitivity increases with the isospin asymmetry of the total system and decreases with incident energy.

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Dynamics of clusters and fragments in heavy-ion collisions

Ono

2019

Progress in Particle and Nuclear Physics

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A review is given on the studies of formation of light clusters and heavier fragments in heavy-ion collisions at incident energies from several tens of MeV/nucleon to several hundred MeV/nucleon, focusing on dynamical aspects and on microscopic theoretical descriptions. Existing experimental data already clarify basic characteristics of expanding and fragmenting systems typically in central collisions, where cluster correlations cannot be ignored. Cluster correlations appear almost everywhere in excited low-density nuclear many-body systems and nuclear matter in statistical equilibrium where the properties of a cluster may be influenced by the medium. On the other hand, transport models to solve the time evolution have been developed based on the single-nucleon distribution function. Different types of transport models are reviewed putting emphasis both on theoretical features and practical performances in the description of fragmentation. A key concept to distinguish different models is how to consistently handle single-nucleon motions in the mean field, fluctuation or branching induced by two-nucleon collisions, and localization of nucleons to form fragments and clusters. Some transport codes have been extended to treat light clusters explicitly. Results indicate that cluster correlations can have strong impacts on global collision dynamics and correlations between light clusters should also be taken into account.

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Erratum: Probing neutron-proton dynamics by pions [Phys. Rev. C 93, 044612 (2016)]

Cited by 35 publications

References 28 publications

Collision dynamics at medium and relativistic energies

Collision dynamics at medium and relativistic energies

Pion production in rare-isotope collisions

Dynamics of clusters and fragments in heavy-ion collisions

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