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Measurement of the spin correlation parameters A/sub l//sub l/ and A/sub s//sub l/ for the reaction pp. -->. d. pi. /sup +/ in the energy region 500--800 MeV

Journal Article · · Phys. Rev. C; (United States)
; ; ; ; ; ; ; ; ; ;
Angular distributions of the spin-correlation parameters A/sub s//sub l/ and A/sub l//sub l/ for the reaction pp..--> pi../sup +/d have been measured at pion center-of-mass angles 40/sup 0/less than or equal totheta/sub ..pi..//sub =//sup */less than or equal to130/sup 0/ at incident energies of 500, 650, and 800 MeV. Additional measurements of A/sub l//sub l/ were made at 600, 700, and 750 MeV. The results of the experiment are compared with the predictions of several unified coupled-channel calculations and partial-wave analyses. While the latest partial-wave analyses were found to fit the data reasonably well, all except one of the various model predictions not only do not fit the data well, but also tend to be in disagreement with each other. The data show no clear sign of a need for proposed dibaryon resonances.
Research Organization:
Northwestern University, Evanston, Illinois 60201
OSTI ID:
5267520
Journal Information:
Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 37:5; ISSN PRVCA
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 DISTRIBUTION
ANGULAR MOMENTUM
BARYON-BARYON INTERACTIONS
BOSONS
CHARGED PARTICLES
COUPLED CHANNEL THEORY
CROSS SECTIONS
DEUTERONS
DIFFERENTIAL CROSS SECTIONS
DISTRIBUTION
ELEMENTARY PARTICLES
ENERGY RANGE
HADRON-HADRON INTERACTIONS
HADRONS
HELICITY
INTERACTIONS
MESONS
MEV RANGE
MEV RANGE 100-1000
NUCLEON-NUCLEON INTERACTIONS
PARTIAL WAVES
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PARTICLE PROPERTIES
PIONS
PIONS PLUS
PROTON-NUCLEON INTERACTIONS
PROTON-PROTON INTERACTIONS
PSEUDOSCALAR MESONS
SPIN