It is argued that the branching ratio for the decay χb0(2P) → ηηb can reach few permil as a result of the enhancement of the η emission by the axial anomaly in QCD. This might make the discussed process practical for an experimental search for the ηb.
Bibliographical noteFunding Information:
I thank Dan Cronin-Hennessy for most useful discussions of the possibilities for an experimental search of the discussed here decay. This work was supported in part by the DOE grant DE-FG02-94ER40823.