17 de janeiro de 2019 | Altas Energias, Publicações
K. Tsushima
Phys. Rev. D 99, 014026 – Published 17 January 2019
17/01/2019
Abstract
In-medium properties of the low-lying strange, charm, and bottom baryons in symmetric nuclear matter are studied in the quark-meson coupling (QMC) model. Results for the Lorentz-scalar effective masses, mean field potentials felt by the light quarks in the baryons, in-medium bag radii, and the lowest mode bag eigenvalues are presented for those calculated using the updated data. This study completes the in-medium properties of the low-lying baryons in symmetric nuclear matter in the QMC model, for the strange, charm, and bottom baryons which contain one or two strange, one charm, or one bottom quark, as well as at least one light quark. The highlight is the prediction of the bottom baryon Lorentz-scalar effective masses; namely, the Lorentz-scalar effective mass of Σb becomes smaller than that of Ξb at moderate nuclear matter density, m∗Σb