Asymmetries for elastic scattering of π+ from polarized3He and the Δ-neutron spin-spin interaction

M. A. Espy, D. Dehnhard, C. M. Edwards, M. Palarczyk, J. L. Langenbrunner, B. Davis, G. R. Burleson, S. Blanchard, W. R. Gibbs, B. Lail, B. Nelson, B. K. Park, Q. Zhao, W. J. Cummings, P. P J Delheij, B. K. Jennings, R. Henderson, O. Häusser, D. Thiessen, E. BrashM. K. Jones, B. Larson, B. Brinkmöller, K. Maeda, C. L. Morris, J. M. O'Donnell, S. Penttilä, D. Swenson, D. Tupa, C. Bennhold, S. S. Kamalov

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10 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)3667-3670
Number of pages4
JournalPhysical Review Letters
Volume76
Issue number20
Publication statusPublished - 1996

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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