6533b855fe1ef96bd12b1089
RESEARCH PRODUCT
Pion Scattering and Pion Photoproduction on 3He
Byron K. JenningsC. BennholdS. S. KamalovL. Tiatorsubject
PhysicsScatteringmedia_common.quotation_subjectNuclear TheoryNuclear structureAsymmetryNuclear physicsNuclear interactionPionAmplitudeHigh Energy Physics::ExperimentNuclear ExperimentWave functionDifferential (mathematics)media_commondescription
Using realistic 3-body Faddeev wave functions π± scattering and π+ photoproduction on 3He have been calculated in a consistent model. We demonstrate that at T π ≤ 180MeV polarization observables in pion scattering contain very little information about nuclear structure and can be understood in terms of free πN amplitudes. At higher energies the sign-flip of the asymmetry A y offers a new possibility to study higher-order effects of pion nuclear interaction. In pion photoproduction we find that two-step processes such as 3 He(γ, π°)3 He(π°, π+)3 H give rise to unexpected large contributions to the differential crosssection as well as to γ-asymmetry and with this improved a long time discrepancy between experiment and previous calculations has been removed.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1992-01-01 |