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Nuclear Theory·nucl-th

Monday·April 29, 2024

10 papers—4 primary·6 cross-listed

All10Primary4Cross-lists6
  1. 01

    Charged pion vortices in rotating systems

    D. N. Voskresensky🇷🇺

    Possibilities for formation of the charged pion field vortices in a rotating empty vessel (in vacuum) and in the rotating pion gas with a dynamically fixed particle number at zero temperature are studied within the model. It is shown that in the former case at a rapid rotation a supervortex of a charged pion field can be formed. Important role played by the electric field is demonstrated. Field configurations in presence and absence of the pion self-interaction are found. Conditions for formation of the vortex lattice at the rotation of the charged pion gas at zero temperature are studied. Observational effects are discussed.

    nucl-thcond-mat.quant-gashep-phPhys.Part.Nucl.Lett.(2024)·6 citations
  2. 02

    TALYS calculation and a short review of the experimental status of proton capture studies on p-nuclei: A guide to future investigation

    Indrani Ray · Argha Deb

    TALYS calculations were performed to obtain the theoretical proton capture cross-sections on the p-nuclei. A short review on the status of related experimental studies was also conducted. Some basic properties such as Q-values, Coulomb barrier, Gamow peak, Gamow Window, and decay properties of the parent and daughter nuclei were studied. Various experimental parameters, e.g., beam energy, beam current, targets, and detectors, used in experimental investigations reported in the literature, were tabulated. The results of the TALYS calculations in the Gamow region were compared with the corresponding experimental values wherever available. This study is expected to facilitate the planning of future experiments.

    nucl-thnucl-exCPC(2024)·0 citations
  3. 03

    Bayesian and Principal Component Analyses of Neutron Star Properties

    N. K. Patra🇮🇳

    A Bayesian method is used in this extensive work to generate a large set of minimally constrained equations of state (EOSs) for matters in neutron stars (NS). These EOSs are analyzed for their correlations with key NS properties, such as the tidal deformability, radius, and maximum mass, within the mass range of . The observed connections between the pressure of -equilibrated matter and the properties of neutron stars at different densities offer significant insights into the behavior of NS matter in a nearly model-independent manner. The study also examines the influence of various factors on the correlation of symmetry energy parameters, such as slope and curvature parameters at saturation density () with the tidal deformability and radius of neutron stars. This study investigates the robustness of the observed correlations by considering the distributions and interdependence of symmetry energy parameters. Furthermore, the utilization of Principal Component Analysis (PCA) is employed to unveil the complicated relationship between various nuclear matter parameters and properties of neutron stars. This analysis highlights the importance of employing multivariate analysis techniques in order to comprehend the variety in tidal deformability and radius observed across distinct masses of NS. This comprehensive study aims to establish a connection between the parameters of nuclear matter and the properties of neutron stars, providing significant insights into the behavior of NS matter across different circumstances.

    nucl-thastro-ph.HEastro-ph.SRgr-qc+10 citations
  4. 04

    Global Data-Driven Determination of Baryon Transition Form Factors

    Yu-Fei Wang🇩🇪 · Michael Döring🇺🇸 · Jackson Hergenrather🇺🇸 · Maxim Mai🇺🇸 · Terry Mart🇮🇩 · Ulf-G. Meißner🇩🇪 · Deborah Rönchen🇩🇪 · Ronald Workman (Jülich-Bonn-Washington Collaboration)🇺🇸

    Hadronic resonances emerge from strong interactions encoding the dynamics of quarks and gluons. The structure of these resonances can be probed by virtual photons parameterized in transition form factors. In this study, twelve and transition form factors at the pole are extracted from data with the center-of-mass energy from threshold to , and the photon virtuality . For the first time, these results are determined from a simultaneous analysis of more than one state, i.e., , , and electroproduction data. In addition, about data in the hadronic sector as well as photoproduction serve as boundary conditions. For the and states our results are in qualitative agreement with previous studies, while the transition form factors at the poles of some higher excited states are estimated for the first time. Realistic uncertainties are determined by further exploring the parameter space.

    nucl-thhep-phnucl-exPRL(2024)·19 citations

Affiliations

first authorsco-authorsvia INSPIRE