Comment on "On the Origin of the OZI Rule in QCD", by N. Isgur and H. B. Thacker
T. Schaefer, E. Shuryak
Abstract
We comment on the recent paper (hep-lat/0005006) by Isgur and Thacker on the origin of the OZI rule in QCD. We show that instantons explain the sign and magnitude of the observed OZI-violating amplitude in all mesonic channels, not just in the η' channel. We comment on the role of instantons in hadronic spectroscopy and the relation between instantons and the large Nc limit of QCD.
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