APS » PROLA » Phys. Rev. Lett. » Volume 76 » Issue 20

Phys. Rev. Lett. 76, 3667 - 3670 (1996)

Asymmetries for Elastic Scattering of π+ from Polarized 3He and the Δ-Neutron Spin-Spin Interaction
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M. A. Espy et al.
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Received 22 November 1995

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.


©1996 The American Physical Society

URL: http://link.aps.org/abstract/PRL/v76/p3667
DOI: 10.1103/PhysRevLett.76.3667
PACS: 25.80.Dj, 13.75.Cs, 24.70.+s, 25.10.+s

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