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Measurement of the analyzing power for pion proton elastic scattering between 471 and 687 MeV/c

Technical Report ·
DOI:https://doi.org/10.2172/5256623· OSTI ID:5256623
The analyzing power, A/sub N/, has been measured for ..pi../sup + -/p..--> pi../sup + -/p at 471, 547, 625, and 687 MeV/c in an angular range corresponding to -0.9 less than or equal to cos theta/sub cm/ less than or equal to 0.8. A polarized proton target with polarization axis normal to the scattering plane was used. The scattered pion and recoil proton were detected in coincidence, using a magnetic spectrometer and a wire chamber/scintillator array, except in cases where one of the particles was kinematically inaccessible. Statistical uncertainties in the data are as low as 0.02; systematic uncertainties are estimated to be less than 3%. The ..pi../sup -/p data are characterized by large values of analyzing power, and rapid variations in the angular distribution with incident momentum. The measurements are compared with the results of existing partial wave analysis.
Research Organization:
Los Alamos National Lab., NM (USA)
DOE Contract Number:
W-7405-ENG-36
OSTI ID:
5256623
Report Number(s):
LA-10451-T; ON: DE850179425
Country of Publication:
United States
Language:
English

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Related Subjects

645100* -- High Energy Physics-- Particle Interactions & Properties-Experimental
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANALYZING POWER
COINCIDENCE CIRCUITS
DATA
DATA ANALYSIS
ELASTIC SCATTERING
ELECTRONIC CIRCUITS
EXPERIMENTAL DATA
HADRON-HADRON INTERACTIONS
INFORMATION
INTERACTIONS
MAGNETIC SPECTROMETERS
MEASURING INSTRUMENTS
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
MULTIWIRE PROPORTIONAL CHAMBERS
NEUTRON DETECTORS
NUMERICAL DATA
PARTICLE INTERACTIONS
PHASE SHIFT
PION MINUS-PROTON INTERACTIONS
PION PLUS-PROTON INTERACTIONS
PION-NUCLEON INTERACTIONS
PION-PROTON INTERACTIONS
POLARIZED TARGETS
PROPORTIONAL COUNTERS
PROTON RECOIL DETECTORS
RADIATION DETECTORS
SCATTERING
SCINTILLATION COUNTERS
SPECTROMETERS
TARGETS