Abstract
The Klein-Gordon version of a simple analytic model of the pionic atom due to M. Ericson is derived. The expected precision of the resulting expression for pionic atom level shifts is about 10%. The model is well-suited for the qualitative comparison of theory, especially with regard to various parametric fitting strategies, and experiment in this case. It is found that a repulsive , comparable with in magnitude, is required to fit the experimental () data in the low region.
- Received 24 June 1985
DOI:https://doi.org/10.1103/PhysRevC.33.576
©1986 American Physical Society