Gluonic effects in vector meson photoproduction at large momentum transfers

Details Gluonic effects in vector meson photoproduction at large momentum transfers Gluonic effects in vector meson photoproduction at large momentum transfers

2001-10-19

arxiv.org/abs/hep-ph/0110268v3

Phys.Lett. B541 (2002) 281-287

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, 6 figures, Latex; Completely rewritten version

Scientific paper

10.1016/S0370-2693(02)02230-X

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.

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