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J/ψproduction through resolved photon processes at e+ e- colliders

R. M. Godbole·D. Indumathi·M. Kraemer
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Abstract

We consider J/psi photoproduction in e+ e- as well as linear photon colliders. We find that the process is dominated by the resolved photon channel. Both the once-resolved and twice-resolved cross-sections are sensitive to (different combinations of) the colour octet matrix elements. Hence, this may be a good testing ground for colour octet contributions in NRQCD. On the other hand, the once-resolved J/psi production cross-section, particularly in a linear photon collider, is sensitive to the gluon content of the photon. Hence these cross-sections can be used to determine the parton distribution functions, especially the gluon distribution, in a photon, if the colour octet matrix elements are known.

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R. M. Godbole, D. Indumathi, M. Kraemer. 2001-10-03. J/ψproduction through resolved photon processes at e+ e- colliders. https://doi.org/10.1103/physrevd.65.074003

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