ar X iv : h ep - p h / 01 10 26 8 v 2 1 5 N ov 2 00 1 Gluonic effects in vector meson photoproduction at large momentum transfers

ar X iv : h ep - p h / 01 10 26 8 v 3 1 6 N ov 2 00 1 Gluonic effects in vector meson photoproduction at large momentum transfers

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 η ′ 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 behav...

ar X iv : h ep - p h / 01 10 26 8 v 1 1 9 O ct 2 00 1 Gluonic effects in vector meson photoproduction at large momentum transfers

The gluonic pole has been instrumental in explaining the mass of the η ′ and providing a plausible explanation for solving the spin crisis. We show that it also plays an important role in the description of the photoproduction of vector mesons at high momentum transfers at JLab energies. Recently the CLAS Collaboration at JLab has published new data on ρ-and φ-meson photoproduction at large mom...

ar X iv : h ep - p h / 06 11 27 1 v 1 2 1 N ov 2 00 6 Structure of the axial - vector meson D s 1 ( 2460 )

ar X iv : h ep - p h / 06 11 27 1 v 2 2 2 N ov 2 00 6 Structure of the axial - vector meson D s 1 ( 2460 )

ar X iv : h ep - p h / 04 04 14 5 v 1 1 7 A pr 2 00 4 NUCLEAR EXCLUSIVE VECTOR MESON PHOTOPRODUCTION

We calculate the nuclear cross section for vector meson exclusive photoproduction within the QCD color dipole picture and in the Regge approach. For the first one, we have considered the phenomenological saturation model, whereas for the latter we use a model based on the dipole Pomeron framework. Theoretical estimates for both light and heavy nuclei are given over a large range of energies.