Duality, Meson Trajectories and Remarks on the Regge-Pole Model for π^0(η) Photoproduction
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In the description of photo-reactions on the basis of the Argonne Regge cut model, it is pointed out that (i) the effect due to the ω trajectory plays a role of the primitive Regge amplitude in the γ+p→π^0+p reaction and (ii) as the primitive-Regge amplitude for the γ+p→η+p reaction, it is not appropriate to consider the ρ- or ω-exchange amplitude whose magnitude turns out to be zero at about t=-0.5(GeV/c)^2 and the Regge amplitude due to a meson trajectory with unnatural parity can be regarded as one of the candidates. More over, a possible degeneracy pattern for the unnatural parity trajectories is suggested.
- 理論物理学刊行会の論文
- 1971-01-25
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