SU(3) Approach to Hypernuclear Interactions and Spectroscopy

Abstract

The SU (3) meson exchange approach to interactions within the baryon octet and nuclear density functional theory are used to derive an ab initio description of hypernuclear interactions. The density dependence of interactions is recast into a DFT with density dependent interaction vertices. The field-theoretical structure is retained by expressing the vertices as functionals of the matter field operators. Applications to infinite hypermatter and neutron star matter are discussed. A new approach is presented allowing to determine in-medium coupling constants out of the N N -vertex functionals, obtained e.g. by DBHF theory, for the full baryon octet by exploiting SU (3) relations.

Multi-strangeness production in hadron induced reactions

“…The rare available experimental data allowed to fix the various cross sections for a variety of elementary channels [72,75]. In-medium scattering has been also performed within the same OBE-scheme and in the spirit of relativistic mean-field (RMF) and density dependent hadronic (DDH) approaches [76]. The parameters are determined by simultaneous fits to NN-and YNscattering observables in the S=-1 sector.…”