Photopion physics is several decades old, but its application to nuclear structure is in its infancy. In this introduction I wish first to review what is known about photopion production on nucleons at threshold, where firm statements of the theoretical predictions can be made, and then to extend the discussion to higher-energy regimes, where models have to be used. In particular, we shall discuss the isobar-doorway model and its relationship to the optical model.
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References and Notes
- 3.N. de Botton, report, this conference.Google Scholar
- 4.P. De Baenst, Nucl. Phys. B24 (1970) 633, keeping terms to order (mπ/mn) in Eq. (9), which may be more consistent, obtained 13.0 and 19.9 for these numbers. It can be seen from this that the deviations between theory and experiment are of order (mπ/mn).Google Scholar
- 5.C. Tzara, Workshop on “Few Body Systems and Electromagnetic Interactions,” Frascati, March 1978.Google Scholar
- 6.R. C. Salgo and H. H. Staub, Nucl. Phys. A138 (1969)Google Scholar
- 8.G. N. Epstein, M. K. Singham and F. Tabakin (1978) preprint.Google Scholar
- 12.R. M. Woloshyn, to be published. To obtain WoloshynTs expression, we replaceGoogle Scholar
- 13.George Bertsch, private communication.Google Scholar
- 16.R. M. Woloshyn, private communicationGoogle Scholar
- 17.G. E. Brown, B. K. Jennings and V. I. Rostokin, Phys. Reports, to be published.Google Scholar
- 20.E. Oset and W. Weise (1978) preprint.Google Scholar
- 21.J. M. Laget, private communication.Google Scholar