Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1996-11-04
Phys.Lett. B398 (1997) 400-406; Erratum-ibid. B411 (1997) 402
Physics
High Energy Physics
High Energy Physics - Phenomenology
9 pages, LaTeX, uses epsfig.sty; Numerical error corrected. A factor of 1/3 missing in amplitude in Eq.(8) added. Obtained gam
Scientific paper
10.1016/S0370-2693(97)01052-6
Theory and phenomenology of the eta_c photo- and electroproduction is developed from the point of view of probing the odderon singularity in QCD which corresponds to the three gluon exchange mechanism. This mechanism leads to the cross-sections which are independent of W^2 for the exchange of three non-interacting gluons or exhibit increase with increasing W^2 (or 1/x) for the odderon intercept above unity. The \eta_c electroproduction in the three gluon exchange mechanism is shown to be entirely controlled by the transversely polarised virtual photons. The magnitude of the eta_c photoproduction cross-section is estimated to be around 11-45pb. The t-dependence of the differential cross-section is also discussed.
Czyzewski Jan
Kwiecinski Jan
Motyka Leszek
Sadzikowski Mariusz
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