The Decay of the Upsilon into Photons
نویسنده
چکیده
The hadronic decays of heavy quark-antiquark 13S1 resonances such as the $/J or T can provide an ideal laboratory for studying the properties of gluon jets. We discuss the predictions of QCD perturbation theory for gluon jet structures, hadronic multiplicities, fragmentation distributions, and angular distributions. In particular the channel (Qa) y + X, whose rate, spectrum, and angular distribution are predicted in lowest order, should allow the study of the jet and resonance structure produced via two intermediate gluons.
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