Abstract
The one-nucleon contribution to threshold pion production in pion-nucleus collisions is calculated using a Fermi gas model of the nuclear excitation spectrum in order to carry out the sum over final nuclear states. For the one-body input a threshold approximant to the production amplitude from the phenomenological Lagrangian theory is used. The cross sections are found to have an dependence near threshold, where for total incident pion energy . In a simple eikonal approach incident pion attenuation is found to lead to a reduction of threshold estimates by a factor of ∼ 10.
NUCLEAR REACTIONS , , , , ; threshold pion production cross section calculated in the Fermi gas model with phenomenological Lagrangian input.
- Received 5 January 1983
DOI:https://doi.org/10.1103/PhysRevC.27.2150
©1983 American Physical Society