Measurements are presented of the recoil-proton polarization for π0 photoproduction angles near 64°in the c.m. system. The steep angular dependence observed by others at lower energies persists to at least 1500 MeV, and the polarization crosses through zero near 63 over the entire 900-1600-MeV energy interval. Summary fits are made to available recoil-proton polarization data, 950-1250 MeV, and are found to require terms of order cos3θ, but no higher.
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)