Relativistic RPA for Isobaric Analogue and Gamow-Teller Resonances in Closed Shell Nuclei

Details Relativistic RPA for Isobaric Analogue and Gamow-Teller Resonances in Closed Shell Nuclei Relativistic RPA for Isobaric Analogue and Gamow-Teller Resonances in Closed Shell Nuclei

1998-07-20

arxiv.org/abs/nucl-th/9807052v2

Phys.Lett. B444 (1998) 14-20

Physics

Nuclear Physics

Nuclear Theory

Minor changes to match version to be published in Phys. Lett B, 13 pages, LaTeX, 1 postSript figure

Scientific paper

10.1016/S0370-2693(98)01373-2

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 $\sigma$, $\omega$ and $\rho$ 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.

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