Evidence for direct triton knockout in the sup 4 He(. pi. ,. pi. prime t ) p reaction

Journal Article · Mon Sep 07 04:00:00 EDT 1992 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.69.1508· OSTI ID:7198863

Langenbrunner, J; Jones, M K; Dehnhard, D ^[1]; Morris, C L ^[2]; Gibbs, W R ^[3]

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1. Department of Physics, University of Minnesota, Minneapolis, Minnesota 55455 (United States)
2. Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
3. Department of Physics, New Mexico State University, Las Cruces, New Mexico, 88003 (United States) Los Alamos National Laboratory, Los Alamos, New Mexico 97545 (United States)

Angular correlation functions for the {sup 4}He({pi}{sup {plus minus}},{pi}{sup {plus minus}{prime}}{ital t}){ital p} reaction at the incident energy {ital T}{sub {pi}}=180 MeV and at four pion scattering angles have been measured. The {sup 4}He({pi}{sup {plus minus}},{pi}{sup {plus minus}{prime}}{ital t}){ital p} data complement previous {sup 4}He({pi}{sup {plus minus}},{pi}{sup {plus minus}{prime}}{ital p}){ital t} results by greatly extending the available range of proton emission angles. We calculate angular correlation functions of the cross sections with three different quasifree knockout models, and we show that direct triton knockout is crucial to an understanding of the data.

• OSTI ID: 7198863
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 69:10; 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
ASYMMETRY
CHARGED PARTICLES
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DATA
DIRECT REACTIONS
DISTRIBUTION
EXPERIMENTAL DATA
HADRON REACTIONS
HELIUM 4 TARGET
INFORMATION
ISOSPIN
KNOCK-OUT REACTIONS
MESON REACTIONS
NUCLEAR REACTIONS
NUMERICAL DATA
PARTICLE IDENTIFICATION
PARTICLE PROPERTIES
PION REACTIONS
TARGETS
TRITONS