Gluonic effects in vector meson photoproduction at large momentum transfers

Abstract

Non-perturbative QCD mechanisms are of fundamental importance in strong interaction physics. In particular, the flavor singlet axial anomaly leads to a gluonic pole mechanism which has been shown to explain the ${\eta }^{\prime }$ mass, violations of the OZI rule and more recently the proton spin. We show here that the interaction derived from the gluonic pole exchange explains the high momentum transfer behavior of the photoproduction cross sections of vector mesons at JLab energies.

arXiv comment10 pages, 6 figures, Latex; Completely rewritten version

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Cited by in corpus (3)

• Rho meson photoproduction at low energies
• Pseudoscalar Meson Decay Constants and Couplings, the Witten-Veneziano Formula beyond large N_c, and the Topological Susceptibility
• Okubo-Zweig-Iizuka rule violation in photoproduction