Partial-wave analysis of pion photoproduction

Abstract

An energy-dependent partial-wave analysis of pion photoproduction data through the second-resonance region (0--1 GeV laboratory kinetic energy) is presented. A set of energy-independent analyses has also been obtained starting from the energy-dependent solution. The data set contains 9074 data for the reactions \ensuremath{\gamma}+p\ensuremath{\rightarrow}p+${\mathrm{\ensuremath{\pi}}}^{0}$, \ensuremath{\gamma}+p\ensuremath{\rightarrow}n+${\mathrm{\ensuremath{\pi}}}^{+}$, \ensuremath{\gamma}+n\ensuremath{\rightarrow}n+${\mathrm{\ensuremath{\pi}}}^{0}$, \ensuremath{\gamma}+n\ensuremath{\rightarrow}p+${\mathrm{\ensuremath{\pi}}}^{\mathrm{\ensuremath{-}}}$, and the inverse reaction ${\mathrm{\ensuremath{\pi}}}^{\mathrm{\ensuremath{-}}}$+p\ensuremath{\rightarrow}n+\ensuremath{\gamma} (converted to \ensuremath{\gamma}+n\ensuremath{\rightarrow}p+${\mathrm{\ensuremath{\pi}}}^{\mathrm{\ensuremath{-}}}$). The predictions of our solutions are compared with the results of previous analyses. Suggestions are made for future experiments.