Year: 2009
Type: article
Abstract: A new version of the quark-meson coupling model, in which the effect of gluon and pion exchanges is included self-consistently, is applied to hyperons in a nuclear medium. The hyperfine interaction due to the gluon exchange plays an important role in the in-medium baryon spectra, while the pion-cloud effect is relatively small. At the quark mean-field level, the Λ feels more attractive force than the Σ or Ξ in matter.
Source: Progress of Theoretical Physics
DOI: 10.1143/ptp.122.1035
Authors: T. Miyatsu, K. Saito
Institution: Tokyo University of Science
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2136452002