Analysis of the photoproduction of ω mesons

Vector meson photoproduction with a linearly polarized beam

“…In this paper, we discuss the SLAC data in the context of a Regge-pole exchange model, which allows us to assess contributions of individual exchanges to the SDMEs. Various models have been proposed in the past [11][12][13][14][15][16][17][18][19][20], with different descriptions of the momentum-transfer dependence of the helicity amplitudes. In general these 3 GeV.…”

Study ofγp→ρωwith Linearly Polarized Photons at 2.8 and 4.7 GeV

“…From the values of a ^ at 2.8 and 4.7 GeV in the interval \t\ < 1 GeV 2 and using the parametrization of Benecke and Diirr 19 we ob-and branching ratio, 7 T uiry = 1.19 ±0.24 MeV. On the other hand the absorption-corrected OPE model 18 with the absorption coefficient C = 0.9 led to T U)7ry = 0.58 ±0.07 MeV for our data.…”

π and ϱ loop corrections to ω photoproduction in the resonance region

“…This is, however, obviously not satisfactory by neglecting the hadronic final state interactions and the coupled-channel effects. The importance of those effects has been well-known, e.g., in pion photoproduction, and the first trial to account for the coupled-channel effects in vector meson photoproduction has been made in late 1960's [ 7]. In this work we make an attempt to reinvestigate this problem in the model of Ref.…”