Dependence of pp->pp pi0 near Threshold on the Spin of the Colliding Nucleons
Abstract
A polarized internal atomic hydrogen target and a stored, polarized beam are used to measure the spin-dependent total cross section DeltasigmaT/sigmatot, as well as the polar integrals of the spin correlation coefficient combination Axx-Ayy, and the analyzing power Ay for pp-> pp pi0 at four bombarding energies between 325 and 400 MeV. This experiment is made possible by the use of a cooled beam in a storage ring. The polarization observables are used to study the contribution from individual partial waves.
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