Colour-Octet Contributions to J/psi Production via Fragmentation at HERA

Details Colour-Octet Contributions to J/psi Production via Fragmentation at HERA Colour-Octet Contributions to J/psi Production via Fragmentation at HERA

1997-11-24

arxiv.org/abs/hep-ph/9711443v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

3 pages (Latex), 2 figures (Postscript), to appear in the Proceedings of the International Europhysics Conference on High Ener

Scientific paper

We study J/psi photoproduction via fragmentation at next-to-leading order in the QCD-improved parton model, using the nonrelativistic factorization formalism proposed by Bodwin, Braaten, and Lepage. We predict that measurements of J/psi photoproduction at DESY HERA should show a distinctive excess over the expectation based on the colour-singlet model at small values of the inelasticity variable z.

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