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arXiv · hep-ph/9410394

Surprises from Quarkonium Decay into Photons

S. Catani·F. Hautmann
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Abstract

The perturbative QCD approach to quarkonium decay into a photon and hadrons is reconsidered. It is shown that a consistent treatment within perturbative QCD calls for the introduction of a fragmentation contribution which has been neglected so far. The ensuing phenomenological implications are discussed, and, in particular, the possibility of measuring the gluon fragmentation function of the photon is addressed. *To appear in the proceedings of the workshop QCD94, Montpellier, July '94.

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S. Catani, F. Hautmann. 1994-10-27. Surprises from Quarkonium Decay into Photons. https://doi.org/10.1016/0920-5632(95)00101-e

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