Compton scattering, meson exchange, and the polarizabilities of bound nucleons
1996; American Institute of Physics; Volume: 54; Issue: 5 Linguagem: Inglês
10.1103/physrevc.54.r2124
ISSN1538-4497
AutoresG. J. Feldman, Kenneth Ernest Mellendorf, R. A. Eisenstein, F. J. Federspiel, G. Garino, R. Igarashi, N. R. Kolb, M. Lucas, B. E. MacGibbon, W. K. Mize, A. M. Nathan, R. E. Pywell, Doug Wells,
Tópico(s)High-pressure geophysics and materials
ResumoElastic photon scattering cross sections on $^{16}\mathrm{O}$ have been measured in the energy range 27-108 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.
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