Measurement of the {pi}{sup +}{ital p{searrow}} analyzing power at 68.3 MeV
- Institut fuer Experimentelle Kernphysik, Universitaet Karlsruhe (Germany)
The analyzing power {ital A}{sub {ital y}} for {pi}{sup +}{ital p{searrow}} scattering at 68.3 MeV has been measured at the Paul Scherrer Institut with the magnetic spectrometer LEPS. The measurements cover the angular range 40{degree}{le}{theta}{sub lab}{le}70{degree}. The protons have been polarized in a butanol target, operated in frozen spin mode. The {ital S}31 phase shift comes out by about 1{degree} smaller than the Koch-Pietarinen [Nucl. Phys. A {bold 336}, 331 (1980)] phase shift analysis, supporting the necessity of an alternative dispersion analysis of {pi}{ital N} scattering to determine the {sigma} term and the {pi}{ital N} coupling constant. {copyright} {ital 1996 The American Physical Society.}
- OSTI ID:
- 385836
- Journal Information:
- Physical Review, C, Vol. 54, Issue 4; Other Information: PBD: Oct 1996
- Country of Publication:
- United States
- Language:
- English
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