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Non-perturbative gluons in diffractive photo-production of J/Psi

The modifications induced in the calculation of the cross section of the diffractive process gamma gamma -> J/Psi J/Psi when the gluon propagator is changed are analyzed. Instead of the usual perturbative gluon propagator, alternative forms obtained using non-perturbative methods like Dyson-Schwinger equations are used to consider in a more consistent way the contributions of the infrared region. The result shows a reduction in the differential cross-section for low momentum transfer once compared with the perturbative result, to be confirmed with future experimental results from TESLA.

preprint2001arXivOpen access
M. B. Gay DucatiWerner K. Sauter
hep-ph
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Open access2 authors1 topic
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M. B. Gay DucatiWerner K. Sauter

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