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Nuclear Theory·nucl-th

Wednesday·December 22, 2021

10 papers—4 primary·6 cross-listed

All10Primary4Cross-lists6
  1. 01

    A study of the elastic scattering at finite baryon density

    Hyeon-dong Han🇰🇷 · Parada T. P. Hutauruk🇰🇷 · Seung-il Nam🇰🇷

    We investigate the elastic scattering for the channel dominated by the resonance at finite baryon density for the symmetric nuclear matter, employing the effective Lagrangian approach at the tree-level Born approximation. The quark-meson coupling (QMC) model and linear-density approximation are employed to describe the medium modifications for the in-medium baryon properties, such as the nucleon and masses, and full decay width. We first reproduce the experimental data in vacuum by fitting the model parameters, then analyze various physical observables including total and differential cross sections, proton-spin asymmetry in medium. It turns out that the -resonance contribution becomes diminished with respect to , due to the weaker -interaction strength in medium. Beyond the -resonance region GeV, the cross sections are almost independent of the density. The present results will be useful to understand the role of the resonance in the neutron-star equation of state (EoS) as well as in relativistic heavy-ion collision experiments.

    nucl-thhep-phnucl-exMod.Phys.Lett.A(2022)·3 citations
  2. 02

    A study of shear viscosity coefficient of quark matter in Polyakov quark meson model for three flavors

    Ritesh Ghosh🇮🇳

    We have computed shear viscosity coefficient for hot and dense QCD matter within Polyakov loop extended quark meson(PQM) model for three flavors. Viscosity coefficient is estimated using Boltzmann equation within the relaxation time approximation. Relaxation times for quarks are calculated from elastic scattering of quarks and antiquarks via gluon exchange. Also the mean free paths of strange and light quarks are estimated for this cases. The calculations are performed at finite chemical potential. Thermodynamic properties like energy, pressure, entropy densities are also computed and compared with lattice QCD data.

    nucl-thhep-ph0 citations
  3. 03

    Nuclear configurational entropy and high energy hadron-hadron scattering reactions

    G. Karapetyan🇧🇷

    In this work, the high energy hadron-hadron scattering is studied in the framework of holographic AdS/QCD models, using the Brower-Polchinski-Strassler-Tan Pomeron exchange kernel and gravitational form factors. We apply the configurational entropy techniques to estimate the slope of the total cross section for the total hadron-hadron cross sections at high energies. A good agreement is derived between our approach and the total cross section for combinations that include the pion-nucleon, nucleon-nucleon, and pion-pion, as well as for any high energy data with inclusion of data from the TOTEM collaboration at the LHC and approximated by the Pomeron exchange. In the case of pion-nucleon and pion-pion scattering, the agreement for the critical points to the differential configurational entropy can be reached within 1.1% even without the involvement of any extra parameters.

    nucl-thEur.Phys.J.Plus(2022)·12 citations
  4. 04

    Model-Independent Determination of Isotopic Cross Sections per Fission for Reactor Antineutrinos

    Yu-Feng Li🇨🇳 · Zhao Xin🇨🇳

    Model-independent reactor isotopic cross sections per fission are determined by global fits of the reactor antineutrino data from High-Enriched Uranium (HEU) reactor rates, Low-Enriched Uranium (LEU) reactor rates, and reactor fuel evolution data. Taking account of the implicit quasi-linear relationship between the fission fractions of and in the LEU reactor data, the Inverse-Beta-Decay (IBD) yields and their correlations of the fissionable isotopes , , and Pu's are obtained. The data-driven isotopic IBD yields provide an anomaly-free model for the reactor isotopic cross sections per fission, where better than 1\% accuracy of the expected reactor IBD yields can be achieved for future experiments.

    nucl-thhep-exhep-phPRD(2022)·2 citations

Affiliations

first authorsco-authorsvia INSPIRE