Abstract
We derive simple expressions for the effect of medium modifications (or distortions) on the propagation of a pion between two nucleons in a nucleus. Our results are applicable to pion reactions in a variety of situations, but we are particularly interested in the influence of distortions on pion double charge exchange at low energy. We are able to calculate these distortions for a finite nucleus using a realistic choice of optical potential. We represent their effect as a modification of the S- and P-wave pion-nucleon scattering amplitudes that occur at the location of the first (or last) nucleon to be struck. We illustrate our method by showing numerical results for a shematic optical potential.
Original language | English (US) |
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Pages (from-to) | 1988-1998 |
Number of pages | 11 |
Journal | Physical Review C |
Volume | 48 |
Issue number | 4 |
DOIs | |
State | Published - Jan 1 1993 |
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics