Incoherent {pi}{sup 0} photoproduction from complex nuclei
- Instituto de Fisica da Universidade de Sao Paulo, P.O. Box 66318, CEP 05315-970, Sao Paulo (Brazil)
- Department of Physics and Astronomy, University of Kentucky, Lexington, Kentucky, 40506 (United States)
Incoherent {pi}{sup 0} photoproduction from nuclei is evaluated via a multicollisional intranuclear cascade framework. In-medium modifications are taken into account, including a realistic dynamical treatment of multiple {pi}N and {delta}N scattering processes throughout the cascade. This time-dependent analysis yields structures in the {sup 12}C {pi}{sup 0} differential cross section both in the {delta} region and in the photon energy range from 5 to 6 GeV, with the former in very nice agreement with recent results from Mainz Microton. For heavy nuclei, however, such structures disappear because of a more effective Fermi motion and a relatively higher final state interaction of the produced pions as they exit the nucleus. The calculation of the incoherent part of the total {pi}{sup 0} photoproduction propitiates a clean and powerful kinematical separation from competitive (electromagnetic/nuclear) production processes, which currently is a theoretical challenge for the PrimEx experiment at the Jefferson Lab.
- OSTI ID:
- 20698641
- Journal Information:
- Physical Review. C, Nuclear Physics, Vol. 71, Issue 5; Other Information: DOI: 10.1103/PhysRevC.71.051603; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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