Widths of Isobaric Analog Resonances: a microscopic approach
  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. 
G. Colo`(1), H. Sagawa(2), N. Van Giai(3), P.F. Bortignon(1) and T.   Suzuki(4) ((1) Dipartimento di Fisica, Universita` deg...