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Title: Measurement of the {pi}{sup +}{ital p{searrow}} analyzing power at 68.3 MeV

Abstract

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.}

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ;  [1]
  1. Institut fuer Experimentelle Kernphysik, Universitaet Karlsruhe (Germany)
Publication Date:
OSTI Identifier:
385836
Resource Type:
Journal Article
Journal Name:
Physical Review, C
Additional Journal Information:
Journal Volume: 54; Journal Issue: 4; Other Information: PBD: Oct 1996
Country of Publication:
United States
Language:
English
Subject:
66 PHYSICS; PION PLUS-PROTON INTERACTIONS; POLARIZED TARGETS; POLARIZATION-ASYMMETRY RATIO; MEV RANGE 10-100; MAGNETIC SPECTROMETERS; PHASE SHIFT; COUPLING CONSTANTS; CHIRAL SYMMETRY; SYMMETRY BREAKING; QUANTUM CHROMODYNAMICS; SIGMA TERMS

Citation Formats

Wieser, R, Denig, A, von Hagel, U, Joram, C, Kluge, W, Andermann, R, Bilger, R, Clement, H, Foehl, K, Heitlinger, K, Wagner, G J, van den Brandt, B, Foroughi, F, Hautle, P, Konter, A, Mango, S, Kovalev, A, Physikalisches Institut, Universitaet Tuebingen, Paul Scherrer Institut,CH-5232 Villigen-PSI, and St. Petersburg Nuclear Physics Institute, Gatchina. Measurement of the {pi}{sup +}{ital p{searrow}} analyzing power at 68.3 MeV. United States: N. p., 1996. Web. doi:10.1103/PhysRevC.54.1930.
Wieser, R, Denig, A, von Hagel, U, Joram, C, Kluge, W, Andermann, R, Bilger, R, Clement, H, Foehl, K, Heitlinger, K, Wagner, G J, van den Brandt, B, Foroughi, F, Hautle, P, Konter, A, Mango, S, Kovalev, A, Physikalisches Institut, Universitaet Tuebingen, Paul Scherrer Institut,CH-5232 Villigen-PSI, & St. Petersburg Nuclear Physics Institute, Gatchina. Measurement of the {pi}{sup +}{ital p{searrow}} analyzing power at 68.3 MeV. United States. https://doi.org/10.1103/PhysRevC.54.1930
Wieser, R, Denig, A, von Hagel, U, Joram, C, Kluge, W, Andermann, R, Bilger, R, Clement, H, Foehl, K, Heitlinger, K, Wagner, G J, van den Brandt, B, Foroughi, F, Hautle, P, Konter, A, Mango, S, Kovalev, A, Physikalisches Institut, Universitaet Tuebingen, Paul Scherrer Institut,CH-5232 Villigen-PSI, and St. Petersburg Nuclear Physics Institute, Gatchina. 1996. "Measurement of the {pi}{sup +}{ital p{searrow}} analyzing power at 68.3 MeV". United States. https://doi.org/10.1103/PhysRevC.54.1930.
@article{osti_385836,
title = {Measurement of the {pi}{sup +}{ital p{searrow}} analyzing power at 68.3 MeV},
author = {Wieser, R and Denig, A and von Hagel, U and Joram, C and Kluge, W and Andermann, R and Bilger, R and Clement, H and Foehl, K and Heitlinger, K and Wagner, G J and van den Brandt, B and Foroughi, F and Hautle, P and Konter, A and Mango, S and Kovalev, A and Physikalisches Institut, Universitaet Tuebingen and Paul Scherrer Institut,CH-5232 Villigen-PSI and St. Petersburg Nuclear Physics Institute, Gatchina},
abstractNote = {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.}},
doi = {10.1103/PhysRevC.54.1930},
url = {https://www.osti.gov/biblio/385836}, journal = {Physical Review, C},
number = 4,
volume = 54,
place = {United States},
year = {Tue Oct 01 00:00:00 EDT 1996},
month = {Tue Oct 01 00:00:00 EDT 1996}
}