PaperPanorama
FAQ

Nuclear Theory·nucl-th

Wednesday·May 24, 2023

11 papers—4 primary·7 cross-listed

All11Primary4Cross-lists7
  1. 01

    Nonlocal optical potential in the inelastic deuteron scattering off Mg

    A. Deltuva · D. Jurčiukonis

    Nonlocal nucleon-nucleus optical potential with rotational quadrupole deformation enabling the excitation of the state is developed; it fits well the proton- elastic and inelastic differential cross section in the beam energy range from 30 to 45 MeV per nucleon. The inelastic deuteron- scattering leading to the excited state is studied in the same energy regime by solving the three-body Faddeev-type equations for transition operators. Effects of the optical potential nonlocality are evaluated by comparison with local models. Significant effects on the inelastic differential cross section are found at forward angles up to the first peak and at larger angles beyond the second peak. Nonlocal optical potential provides a simultaneous reasonable reproduction of the experimental data for the elastic and inelastic proton- and deuteron- scattering, not achieved using local potentials.

    nucl-thnucl-exPRC(2023)·5 citations
  2. 02

    Nucleon-Nucleon elastic and inelastic scattering using quantum field theory: a comparative study

    Raghad Al-Bakri🇸🇦 · Bassam Shehadeh🇸🇦

    In this paper, we use Yukawa theory to calculate differential and total cross-sections for elastic and inelastic scattering in nucleon-nucleon interactions. We start from the fundamental Lagrangian and derive the -matrix and hence the invariant scattering matrix leading towards the differential and total cross section. We perform calculations utilizing two types of Yukawa interaction terms: 1) scalar current, and 2) pseudoscalar current. We also carry out calculations in a laboratory frame. Calculated results using scalar current exhibits the exact features of elastic and inelastic scattering. The results agree very well with the differential cross-sections for experimental data. The pseudoscalar current calculations do not offer reasonable results and features of the NN interactions. The simplicity of the theory makes it all the more impressive, thus it can be used in place of more complicated field theories to describe NN interactions.

    nucl-thhep-phphysics.comp-ph1 citation
  3. 03

    Impacts of symmetry energy slope on the oscillation frequencies of neutron stars with short-range correlation and admixed dark matter

    Bin Hong🇨🇳 · ZhongZhou Ren🇨🇳 · Chen Wu🇨🇳 · XueLing Mu🇨🇳

    Oscillation modes of compact stars, in general, can serve as a fingerprint in determining the equation of state (EOS) of dense matter. In this study, we examine the impact of symmetry energy slope () on the oscillation frequencies of neutron stars (NSs) with nucleon-nucleon short range correlation (SRC) and admixed dark matter (DM) for the first time within the relativistic mean-field theory. By adjusting the , we revise the EOS and coupling parameters in light of the SRC and DM effects, and construct the new sets. The results reveal that NSs containing SRC and DM inside are more likely to satisfy the observational constraints, and we find that smaller exhibits larger fundamental non-radial and radial frequencies, and that the effect on Large Separation (LG) is also mainly concentrated in the low-mass region. Moreover, we update the linear relationship between the non-radial frequency and mean density, and we further give empirical relations between non-radial and radial frequencies and tidal deformability at different for 1.4 and 2. These findings will enable us to more effectively confine the NS EOSs, in turn, also provide a strategy to place constraints on the .

    nucl-thgr-qcClass.Quant.Grav.(2023)·18 citations
  4. 04

    Advancing the IAV Model with CDCC Wave Functions for Realistic Descriptions of Two-Body Projectile Breakup

    Jin Lei · Antonio M. Moro

    Inclusive breakup is an important reaction mechanism of reactions induced by weakly bound nuclei. The Ichimura, Austern, and Vincent (IAV) model is widely used to analyze inclusive breakup processes and is based on a Distorted Wave Born Approximation (DWBA). However, the validity of the DWBA form for inclusive breakup requires further exploration. In this study, we present a derivation of the IAV model, using the continuum-discretized coupled-channels (CDCC) wave function, and apply it to the Nb reaction. We examine the differences between the CDCC-IAV and DWBA-IAV models by artificially modifying the binding energy of the deuteron using two distinct types of optical potential. Our findings indicate that the CDCC method potentially provides a more fundamental description of the + interaction and may provide a more realistic description of the interior part of the wave function. This study offers significant potential in increasing the precision and dependability of weakly bound nuclei inclusive breakup process estimation within a fully quantum mechanical model.

    nucl-thnucl-exPRC(2023)·14 citations

Affiliations

first authorsco-authorsvia INSPIRE