2000/10/11 by Qiang Zhao, Q. Zhao · 5 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #nucl-th
paper · pdf · doi:10.1103/physrevc.63.025203
published as Phys.Rev. C63 (2001) 025203 · 16 pages, Revtex, 9 eps figures, to appear in PRC
arxiv created 2000/10/11 · openalex publication_date 2001/01/05 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
In this work, an improved quark model approach to the \ensuremathω meson photoproduction with an effective Lagrangian is presented. The t-channel natural-parity exchange is taken into account through the Pomeron exchange, while the unnatural-parity exchange is described by the \ensuremathπ0 exchange. With a very limited number of parameters, the available experimental data in the low energy regime can be consistently accounted for. We find that the beam polarization observables show sensitivities to some s-channel individual resonances in the SU(6)\ensuremath\bigotimesO(3) quark model symmetry limit. Especially, the two resonances P13(1720) and F15(1680), which belong to the representation [56,28,2,2,J], have dominant contributions over other excited states. Concerning the essential motivation of searching for ``missing resonances'' in meson photoproduction, this approach provides a feasible framework, on which systematic investigations can be done.