Widths of Isobaric Analog Resonances: a microscopic approach

Details Widths of Isobaric Analog Resonances: a microscopic approach Widths of Isobaric Analog Resonances: a microscopic approach

1998-04-23

arxiv.org/abs/nucl-th/9804055v1

Phys.Rev.C57:3049-3054,1998

Physics

Nuclear Physics

Nuclear Theory

18 pages, 1 figure. To appear on Phys. Rev. C (tentatively scheduled for June 1998)

Scientific paper

10.1103/PhysRevC.57.3049

A self-consistent particle-phonon coupling model is used to investigate the properties of the isobaric analog resonance in $^{208}$Bi. It is shown that quantitative agreement with experimental data for the energy and the width can be obtained if the effects of isospin-breaking nuclear forces are included, in addition to the Coulomb force effects. A connection between microscopic model predictions and doorway state approaches which make use of the isovector monopole resonance, is established via a phenomenological ansatz for the optical potential.

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