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

Autor:	B. Saghai, Jim Al-Khalili, Qiang Zhao
Rok vydání:	2001
Předmět:	Physics Nuclear and High Energy Physics Particle physics Nuclear Theory Meson Effective lagrangian Constituent quark High Energy Physics::Experiment Nuclear Experiment Nucleon Phi meson Beam (structure)
Zdroj:	Physics Letters B. 509:231-238
ISSN:	0370-2693
Popis:	We examine the non-diffractive mechanisms in the $\phi$ 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 {\it s}- and {\it u}-channel processes. Isotopic effects arising from the reactions $\gamma p\to \phi p$ and $\gamma n\to \phi n$, are investigated by comparing the cross sections and polarized beam asymmetries. Our result highlights an experimental means of studying non-diffractive mechanisms in $\phi$ meson photoproduction. Comment: 4 eps figures, version accepted by Phys. Lett. B
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::92b194b97bf71a571e01d4c1932509b6 https://doi.org/10.1016/s0370-2693(01)00432-4 Zobrazit plný text záznamu Full Text from ScienceDirect