Artigo
Relativistic RPA for isobaric analogue and Gamow-Teller resonances in closed shell nuclei
Fecha
1998-12-17Registro en:
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, v. 444, n. 1-2, p. 14-20, 1998.
0370-2693
10.1016/S0370-2693(98)01373-2
WOS:000077887700003
2-s2.0-0346545986
2914838355690793
0000-0002-3024-2671
Autor
Universidade Estadual Paulista (Unesp)
Universidad Nacional de La Plata
Resumen
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 48Ca, 90Zr and 208Pb. We use the parameter set NL1 for the σ, ω and ρ 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. © 1998 Published by Elsevier Science B.V. All rights reserved.