Abstract
We discuss a notion of gluon-glueball duality analogous to quark-hadron duality. We apply this idea to the radiative decay of heavy orthoquarkonium, QQ̄→γgg, which has been used to search for glueballs. The duality is first introduced in two simplified contexts: (i) a hypothetical version of QCD without any light quarks and (ii)QCD in the large-Nc limit. We then discuss how an approximate form of this duality could hold in real QCD, based on a hierarchy of time scales in the temporal evolution of the gg subsystem in radiative orthoquarkonium decay. We apply this notion of gluon-glueball duality to suggest a method that could be useful in experimental searches for glueballs.
| Original language | English |
|---|---|
| Article number | 054003 |
| Journal | Physical Review D - Particles, Fields, Gravitation and Cosmology |
| Volume | 80 |
| Issue number | 5 |
| DOIs | |
| State | Published - Sep 4 2009 |
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