Search for Photoproduction of Bosons by the Missing-Mass Technique and Measurement of the s and t Distribution of the Photoproduced Hadronic Continuum

The reaction γ+p→p+m⁰ was studied with a tagged-photon beam of energy range 1.90 to 4.70 GeV. No new resonances were seen in the state m⁰ but instead a large nonresonant production was observed. The s and t dependences of this continuum production were measured and found to have interesting properties. The recoil-proton spectra from the photoproduced continuum are found to strongly resemble recoil-proton spectra from hadron-initiated reactions.