1. Compton scattering, meson exchange, and the polarizabilities of bound nucleons
- Author
-
B. E. MacGibbon, W. K. Mize, N. R. Kolb, K. E. Mellendorf, M. A. Lucas, Alan M. Nathan, R. Igarashi, D. P. Wells, G. Feldman, G. Garino, R. E. Pywell, R. A. Eisenstein, and F. J. Federspiel
- Subjects
Physics ,Nuclear physics ,Elastic scattering ,Nuclear and High Energy Physics ,Amplitude ,Meson ,Polarizability ,Scattering ,Nuclear Theory ,Bound state ,Compton scattering ,Nucleon - Abstract
Elastic photon scattering cross sections on {sup 16}O have been measured in the energy range 27{endash}108 MeV. These data are inconsistent with a conventional interpretation in which the electric and magnetic polarizabilities of the bound nucleon are unchanged from the free values and the meson-exchange seagull amplitude is taken in the zero-energy limit. Agreement with the data can be achieved by invoking either strongly modified polarizabilities or a substantial energy dependence to the meson-exchange seagull amplitude. It is argued that these seemingly different explanations are experimentally indistinguishable and probably physically equivalent. {copyright} {ital 1996 The American Physical Society.}
- Published
- 1996