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Measurement of the asymmetry parameter A in. pi. /sup -/p elastic and charge-exchange scattering at pion energies T/sub. pi. / = 98, 238, 292, and 310 MeV

Journal Article · · Phys. Rev. D; (United States)
The asymmetry parameter A in ..pi../sup -/p elastic scattering at incident pion laboratory kinetic energies T/sub ..pi../ of 98, 238, and 292 MeV and in ..pi../sup -/p charge-exchange scattering ..pi../sup -/p..--> pi../sup 0/n at T/sub ..pi../ = 238, 292, and 310 MeV have been measured over a wide range of scattering angles (typically from about 60/sup 0/ to 130/sup 0/ c.m.) with a polarized proton target. The data have been used in an energy-independent phase-shift analysis to improve the precision of the pion-nucleon phase shifts, to set new limits on violation of isospin conservation in the pion-nucleon S wave, and to confirm significant charge dependence in the P/sub 3/2/ wave.
Research Organization:
Institut de Physique Nucleaire de l'Universite de Lausanne, CH-1015 Lausanne, Switzerland
OSTI ID:
6048248
Journal Information:
Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 27:5; ISSN PRVDA
Country of Publication:
United States
Language:
English