Measurement of Asymmetry in Spin-Dependent e − p Resonance-Region Scattering

The first measurements are reported of the asymmetry in resonance-region scattering of longitudinally polarized electrons by longitudinally polarized protons. Data have been obtained at Q/sup 2/=0.5 and 1.5 (GeV/c)/sup 2/ in the missing-mass range W=1.1--1.9 GeV. Results are compatible with a multip...

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Veröffentlicht in:	Phys. Rev. Lett.; (United States) 1980-01, Vol.45 (25), p.2000-2003
Hauptverfasser:	Baum, G., Bergström, M. R., Clendenin, J. E., Ehrlich, R. D., Hughes, V. W., Kondo, K., Lubell, M. S., Miyashita, S., Miller, R. H., Palmer, D. A., Raith, W., Sasao, N., Schüller, K. P., Souder, P. A.
Format:	Artikel
Sprache:	eng
Schlagworte:	ANGULAR DISTRIBUTION ANGULAR MOMENTUM ASYMMETRY BASIC INTERACTIONS BEAMS BOSONS COMPOSITE MODELS CORRECTIONS CROSS SECTIONS DIFFERENTIAL CROSS SECTIONS DISTRIBUTION DUALITY ELASTIC SCATTERING ELECTROMAGNETIC INTERACTIONS ELECTRON-NUCLEON INTERACTIONS ELECTRON-PROTON INTERACTIONS ELECTROPRODUCTION ELEMENTARY PARTICLES ENERGY RANGE GEV RANGE GEV RANGE 01-10 HADRONS INELASTIC SCATTERING INTERACTIONS LEPTON-BARYON INTERACTIONS LEPTON-HADRON INTERACTIONS LEPTON-NUCLEON INTERACTIONS MASS MATHEMATICAL MODELS MESONS MISSING MASS PARTICLE INTERACTIONS PARTICLE MODELS PARTICLE PRODUCTION PARTICLE PROPERTIES PHYSICS OF ELEMENTARY PARTICLES AND FIELDS PIONS POLARIZED BEAMS POLARIZED TARGETS PSEUDOSCALAR MESONS QUARK MODEL RADIATIVE CORRECTIONS RESONANCE SCATTERING SCATTERING SPIN TARGETS 645102 > High Energy Physics-- Particle Interactions & Properties-Experimental-- Weak Interactions & Properties
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Zusammenfassung:	The first measurements are reported of the asymmetry in resonance-region scattering of longitudinally polarized electrons by longitudinally polarized protons. Data have been obtained at Q/sup 2/=0.5 and 1.5 (GeV/c)/sup 2/ in the missing-mass range W=1.1--1.9 GeV. Results are compatible with a multipole analysis of single-pion electroproduction. The spin-dependent behavior is consistent with a duality mechanism as in the unpolarized case.
ISSN:	0031-9007
DOI:	10.1103/PhysRevLett.45.2000