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

M. B. Gay Ducati·Werner K. Sauter
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Abstract

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.

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M. B. Gay Ducati, Werner K. Sauter. 2001-10-11. Non-perturbative gluons in diffractive photo-production of J/Psi. https://doi.org/10.1016/s0370-2693(01)01230-8

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