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Analyzing power for p elastic scattering in the energy region of the Roper resonance

Journal Article · · Phys. Rev. D; (United States)
; ; ; ; ; ; ;
High-precision measurements of the analyzing power A/sub N/ in p elastic scattering at p/sub / = 471--687 MeV/c are presented and compared with the results of recent N partial-wave analyses (PWA's) by the Karlsruhe-Helsinki, CMU-LBL, and VPI groups. While agreeing with the main features of the measured angular dependence of A/sub N/, the three PWA's yield larger values than the measurements at forward angles at p/sub / = 471, 547, and 625 MeV/c. At 687 MeV/c the PWA's do not agree with the data at far backward angles. We estimate the effect of our data on the phase shifts in this energy region, which includes the Roper resonance.
Research Organization:
Department of Physics, University of California, Los Angeles, California 90024
OSTI ID:
6279827
Journal Information:
Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 33:1; ISSN PRVDA
Country of Publication:
United States
Language:
English

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Related Subjects

645104* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Strong Meson-Induced Interactions-- (-1987)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANALYZING POWER
BARYON RESONANCES
BARYONS
COMPOSITE MODELS
DATA
ELASTIC SCATTERING
ELEMENTARY PARTICLES
ENERGY RANGE
EXPERIMENTAL DATA
FERMIONS
HADRON-HADRON INTERACTIONS
HADRONS
INFORMATION
INTERACTIONS
MATHEMATICAL MODELS
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
MEV RANGE
MEV RANGE 100-1000
N RESONANCES
N-1470 RESONANCES
NUMERICAL DATA
PARTIAL WAVES
PARTICLE IDENTIFICATION
PARTICLE INTERACTIONS
PARTICLE MODELS
PION MINUS-PROTON INTERACTIONS
PION-NUCLEON INTERACTIONS
PION-PROTON INTERACTIONS
POLARIZED TARGETS
QUARK MODEL
RESONANCE PARTICLES
SCATTERING
TARGETS