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Is the σ(600) a Glueball? Two photon reactions can tell us

M. R. Pennington

hep-pharXiv:hep-ph/0009267

Abstract

Minkowski and Ochs have recently argued that the small two photon coupling of a conjectured σ(600) is so small that it is likely to be a glueball. We ask whether this can be so or whether it is simply gauge invariance that produces the observed low mass suppression?

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