Asymmetries for π+ elastic scattering from polarized 3He were measured across the Δ(1232) π-nucleon resonance region at incident energies Tπ = 142, 180, and 256 MeV. Large discrepancies were found between the data and calculations that use the multiple scattering formalism and Faddeev wave functions. Inclusion of a Δ-neutron spin-spin interaction term in the calculations gives a greatly improved representation of the data.
ASJC Scopus subject areas
- Physics and Astronomy(all)