Unified approach to pseudoscalar meson photoproductions off nucleons in the quark model
- Physics Department, Peking University, Beijing 100871, Peoples Republic of (China)
- Institute of High Energy Physics, Beijing 100039, Peoples Republic of (China)
A unified approach to the pseudoscalar meson ({pi}, {eta}, and K) photoproductions off nucleons are presented. It begins with the low energy QCD Lagrangian, and the resonances in the s and u channels are treated in the framework of the quark model. The duality hypothesis is imposed to limit the number of the t-channel exchanges. The CGLN amplitudes for each reaction are evaluated, which include both proton and neutron targets. The important role of the S-wave resonances in the second resonance region is discussed, and is particularly important for the K, {eta}, and {eta}{sup {prime}} photoproductions. {copyright} {ital 1997} {ital The American Physical Society}
- OSTI ID:
- 528189
- Journal Information:
- Physical Review, C, Journal Name: Physical Review, C Journal Issue: 2 Vol. 56; ISSN 0556-2813; ISSN PRVCAN
- Country of Publication:
- United States
- Language:
- English
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