Non-diffractive mechanisms in the φ-meson photoproduction on nucleons

We 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 arisin...

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Bibliographic Details
Published in:Physics letters. B 2001-07, Vol.509 (3), p.231-238
Main Authors: Zhao, Qiang, Saghai, B., Al-Khalili, J.S.
Format: Article
Language:English
Subjects:
Meson production
Phenomenological quark model
Photoproduction reactions
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Summary:We 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.
ISSN:0370-2693
1873-2445
DOI:10.1016/S0370-2693(01)00432-4