Wolfenstein polarization observables for the reactions rvec P P yields rvec P. pi. + N and rvec P P yields rvec P P. pi. sup 0 at 800 MeV and 650 MeV

Thesis/Dissertation · Fri Jan 01 04:00:00 EST 1988

OSTI ID:5176895

Xu, S W

The first measurements of the Wolfenstein polarization parameters D{sub N,N}, D{sub S{Omega}}, and D{sub L{Omega}}, the induced polarization parameter P and analyzing power A for the reactions {rvec P}P {yields} {rvec P}{pi} + N and {rvec P}P {yields} {rvec P}P{pi}{sup 0} at 800 MeV and 650 MeV are reported. The experiment was carried out in the external proton beam area of the Clinton P. Anderson Meson Physics Facility (LAMPF), Los Alamos National Laboratory. The 800Mev and 650Mev polarized proton beam was directed onto a liquid-hydrogen target. Three proton beam polarization directions were used: longitudinal (L), sideways (S) in the scattering plane, and normal (N) to the scattering plane. Scattered protons were analyzed in momentum in the dipole-magnet spectrometer. Two orthogonal polarization components of scattered protons were detected with the polarimeter located directly behind the dipole magnet. The measurements were made with spectrometer spectrometer-polarimeter placed at three central angles, 8.1{degree}, 15.2{degree}, and 22.0{degree}, and the conjugate charged particle detectors covered the regions of 20{degree} to 50{degree}, and 90{degree} to 140{degree}, corresponding geometrically to {Delta} production from {approximately}5{degree} to {approximately}50{degree} in the center-of-mass system. Comparisons are made to results from the model of Dubach, Kloet, and Silbar.

• Research Organization: Texas Univ., Austin, TX (USA)
• OSTI ID: 5176895
• Country of Publication: United States
• Language: English

Related Subjects

651220* -- Nuclear Properties & Reactions
A=1-5
Experimental
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYON REACTIONS
BEAMS
BOSONS
CHARGED-PARTICLE REACTIONS
COMPARATIVE EVALUATIONS
ELEMENTARY PARTICLES
ENERGY RANGE
HADRON REACTIONS
HADRONS
HYDROGEN 1 TARGET
MEASURING INSTRUMENTS
MESONS
MEV RANGE
MEV RANGE 100-1000
NUCLEAR REACTIONS
NUCLEON BEAMS
NUCLEON REACTIONS
PARTICLE BEAMS
PIONS
POLARIMETERS
POLARIZATION
PROTON BEAMS
PROTON REACTIONS
PSEUDOSCALAR MESONS
SCATTERING
SPECTROMETERS
TARGETS