Axial U(1) dynamics in eta and eta' photoproduction
High Energy Physics - Phenomenology
2009-10-31 v1
Abstract
We discuss the sensitivity of eta and eta' photoproduction near threshold to the gluonic OZI breaking parameters in the U_A(1)-extended effective chiral Lagrangian for low-energy QCD. Our coupled-channels analysis hints at a strong correlation between the gluon-induced contributions to the eta' mass and the low-energy pp -> pp eta' reaction and the near-threshold behaviour of the gamma p -> eta p cross-section.
Keywords
Cite
@article{arxiv.hep-ph/0007293,
title = {Axial U(1) dynamics in eta and eta' photoproduction},
author = {Steven D. Bass and Stefan Wetzel and Wolfram Weise},
journal= {arXiv preprint arXiv:hep-ph/0007293},
year = {2009}
}
Comments
19 pages, 9 figures