Abstract
We study radiative and Higgs decay modes of the Z 0 into hypothetical heavy quark bound states (onia). In general, we find that the rates for these decays are extremely small. However, in some cases, there is some enhancement if the onia are rather near in mass to the Z 0. We examine the experimental prospects for detecting, by these means, spin-parity onium states which are otherwise difficult to reach or discovering Higgs mesons. We conclude, unfortunately, that these prospects are not very bright.
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