Non-diffractive mechanisms in the φ-meson photoproduction on nucleons
2001; Elsevier BV; Volume: 509; Issue: 3-4 Linguagem: Inglês
10.1016/s0370-2693(01)00432-4
ISSN1873-2445
AutoresQ. Zhao, B. Saghaï, Jim Al-Khalili,
Tópico(s)Particle physics theoretical and experimental studies
ResumoWe examine the non-diffractive mechanisms in the φ-meson photoproduction from threshold up to a few GeV using an effective Lagrangian in a constituent quark model. The new data from CLAS at large angles can be consistently accounted for in terms of s- and u-channel processes. Isotopic effects arising from the reactions γp→φp and γn→φn, are investigated by comparing the cross sections and polarized beam asymmetries. Our result highlights an experimental means of studying non-diffractive mechanisms in φ-meson photoproduction.
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