We investigate the possibility that the light-mass exotic mesons with J^PC=1^-+ observed at BNL and CERN may be resonances in the eta-pi and eta'-pi systems associated with the anomalous glue which generates the eta' mass in QCD.
@article{arxiv.hep-ph/0108189,
title = {Final state interaction and a light mass "exotic" resonance},
author = {Steven D. Bass and Eugenio Marco},
journal= {arXiv preprint arXiv:hep-ph/0108189},
year = {2009}
}