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Study of the reaction p/sub up-arrow/p. -->. p. pi. /sup +/n with polarized beam from 3 to 12 GeV/c

Journal Article · · Phys. Rev. D; (United States)
; ; ; ; ; ; ;
We present density-matrix elements and single-spin correlations for the reaction p/sub up-arrow/p..-->..p..pi../sup +/n at 3, 4, 6, and 11.75 GeV/c, using both longitudinal and transverse beam polarizations. For small momentum transfers, the spin correlations are mainly due to off-shell ..pi../sup +/p elastic scattering, while for larger t-italic there are large polarization effects associated with the production dynamics for p/sub up-arrow/p..--> delta../sup ++/n. Comparison of longitudinal and transverse polarization correlations suggests that the ..delta../sup ++/-production spin effects are due mainly to unnatural-parity exchanges. We present a model-dependent amplitude analysis, and extract the energy dependence of the natural- and unnatural-parity-exchange contributions.
Research Organization:
Argonne National Laboratory, Argonne, Illinois 60439
DOE Contract Number:
W-31109-ENG-38
OSTI ID:
5445118
Journal Information:
Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 34:1; ISSN PRVDA
Country of Publication:
United States
Language:
English

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Related Subjects

645103* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Strong Interactions & Baryon & Meson Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANGULAR MOMENTUM
BARYON-BARYON INTERACTIONS
BARYONS
BEAMS
BOSONS
CHARGE-EXCHANGE REACTIONS
COMPOSITE MODELS
CROSS SECTIONS
DENSITY MATRIX
ELEMENTARY PARTICLES
ENERGY DEPENDENCE
ENERGY RANGE
FERMIONS
GEV RANGE
GEV RANGE 01-10
GEV RANGE 10-100
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
MATHEMATICAL MODELS
MATRICES
MATRIX ELEMENTS
MESONS
NEUTRONS
NUCLEAR REACTIONS
NUCLEON-NUCLEON INTERACTIONS
NUCLEONS
PARITY
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PRODUCTION
PARTICLE PROPERTIES
PIONS
PIONS PLUS
POLARIZED BEAMS
PROTON-NUCLEON INTERACTIONS
PROTON-PROTON INTERACTIONS
PROTONS
PSEUDOSCALAR MESONS
QUARK MODEL
RECOILS
SPIN