Charge Symmetry Breaking Effects from Phase Shift Analysis of Elastic pi sup(+-) sup 4 He Scattering

摘要

A phase shift analysis of elastic pi sup +4 -He scattering at 20-160 MeV energies was performed to determine pure hadronic phase shifts. No statistically significant difference between the hadronic phase shifts deduced from pi sup + sup 4 He and pi sup - sup 4 He scattering was observed. The results are also presented on a simultaneous phase shift analysis of both pi sup + and pi sup - sup 4 He scattering with account of external Coulomb corrections. A good description of the angular asymmetry parameter A(Theta) is obtained. 20 refs.; 2 figs.; 1 tab. (Atomindex citation 17:064024)