Analyzing powers for the pi(-)(p)over-right-arrow ->pi(0)n reaction acrossthe Delta(1232) resonance - art. no. 024604

High quality analyzing powers for the pi(-) (p) over right arrow --> pi(0)n reaction have been obtained with a polarized proton target over a broad an gular range at incident kinetic energies of 98.1, 138.8, 165.9, and 214.4 M eV. This experiment nearly doubled the existing pi N single-charge-exchange database for energies ranging from 10 to 230 MeV, with 36 new analyzing Po wers. The Neutral Meson Spectrometer was used to detect the outgoing neutra l pions. The data are well described by recent phase-shift analyses. When c ombined with high-precision and accurate cross section data at the same ene rgies, the data can provide a good test of the degree of isospin breaking i n the region of the Delta(1232) resonance. They will also be helpful for co nstraining the evaluation of the pion-nucleon sigma term from the scatterin g amplitudes. [3S0556-2813(99)02408-5].