Relativistic RPA for Isobaric Analogue and Gamow-Teller Resonances in Closed Shell Nuclei
arXiv:nucl-th/9807052 · doi:10.1016/S0370-2693(98)01373-2
Abstract
We perform a self-consistent relativistic RPA calculation for the isobaric analogue and Gamow-Teller resonances based on relativistic mean field theory results for the ground states of $^{48}$Ca, $^{90}$Zr and $^{208}$Pb. We use the parameter set NL1 for the $Ï$, $Ï$ and $Ï$ mesons, and experimental values for the pion and nucleon. An extra parameter, related to the intensity of the contact term in the pion-exchange interaction, is crucial to reproduce the latter resonances.
Minor changes to match version to be published in Phys. Lett B, 13 pages, LaTeX, 1 postSript figure