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Measurement of pi+ p (polarized) analyzing power at 68.3-MeV

Wieser, R. ; Denig, A. ; von Hagel, U. ; et al.
Phys.Rev.C 54 (1996) 1930-1934, 1996.
Inspire Record 429106 DOI 10.17182/hepdata.25768

The analyzing power Ay for π+p→ 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°≤θlab≤70°. The protons have been polarized in a butanol target, operated in frozen spin mode. The S31 phase shift comes out by about 1° smaller than the Koch-Pietarinen [Nucl. Phys. A 336, 331 (1980)] phase shift analysis, supporting the necessity of an alternative dispersion analysis of πN scattering to determine the σ term and the πN coupling constant. © 1996 The American Physical Society.

1 data table
Table 1

The two data sets correspond to measurements with two different target compositions (see text).


Integral cross-sections for pi+ p interaction in the 3,3 resonance region

Friedman, E. ; Goldring, A. ; Johnson, R.R. ; et al.
Phys.Lett.B 254 (1991) 40-43, 1991.
Inspire Record 316889 DOI 10.17182/hepdata.29507

Integral cross sections for π + p interaction have been measured between 125.9 and 201.7 MeV using the transmission method. Over this energy range the results are in very good agreement with predictions made with currently accepted phase shifts. These results are also consistent with similar measurements at lower energies when the dispersion relation constrained Karlsruhe phase shifts are used.

1 data table
Table 1

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