Asymmetries in elastic scattering of 100 MeV. pi. sup + from a polarized sup 3 He target

Journal Article · Mon Dec 09 04:00:00 EST 1991 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.67.3356· OSTI ID:5974049

Larson, B; Haeusser, O; Brash, E J; Chan, C; Rahav, A ^[1]; Bennhold, C; Delheij, P P.J.; Henderson, R S; Jennings, B K; Mellinger, A; Ottewell, D; Trudel, A; Vetterli, M C; Whittal, D M ^[2]; Ram, S ^[3]; Tiator, L ^[4]; Kamalov, S S ^[5]

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1. Simon Fraser University, Burnaby, British Columbia, V5A 1S6 (Canada)
2. TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia, V6T 2A3 (Canada)
3. Tel-Aviv university, Ramat Aviv, Tel-Aviv 69 978 (Israel)
4. Institut fer Kernphysik, Universitaet Mainz, D-6500 Mainz (Germany)
5. Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, Dubna (USSR)

We report the observation of a large asymmetry in the elastic scattering of 100 MeV {pi}{sup +} from a polarized {sup 3}He target. Measurements have been made at laboratory angles of 60{degree}, 80{degree}, and 100{degree}, with the largest value {ital A}{sub {ital y}}=0.89{plus minus}0.12 occurring at 80{degree}, near a cross-section minimum. This asymmetry is the largest observed to date in pion scattering from a spin-1/2 nucleus. The {ital A}{sub {ital y}} data are qualitatively reproduced by a schematic model; however, agreement with the data is significantly improved when realistic three-body Faddeev wave functions and a full nonlocal distorted-wave impulse approximation reaction model are used.

• OSTI ID: 5974049
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 67:24; ISSN PRLTA; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

663460* -- Meson- & Hyperon-induced Reactions & Scattering-- (1992-)
663510 -- Nuclear Mass Ranges-- A=1-5-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
CHARGED-PARTICLE REACTIONS
DATA
DISTRIBUTION
ELASTIC SCATTERING
ENERGY LOSSES
ENERGY RANGE
EQUATIONS
EXPERIMENTAL DATA
FADDEEV EQUATIONS
HADRON REACTIONS
HELIUM 3 TARGET
INFORMATION
LOSSES
MESON REACTIONS
MEV RANGE
MEV RANGE 10-100
NUCLEAR REACTIONS
NUMERICAL DATA
PION PLUS REACTIONS
PION REACTIONS
POLARIZATION
POLARIZED TARGETS
SCATTERING
TARGETS