Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1998-02-09
Phys.Rev. D58 (1998) 117501
Physics
High Energy Physics
High Energy Physics - Phenomenology
11 pages, Latex, epsf, 5 eps figures included
Scientific paper
10.1103/PhysRevD.58.117501
The reactions gamma-gamma to eta_c eta_c and gamma gamma to eta_c + X are discussed within the three gluon exchange model. We give predictions for the differential cross-sections and discuss feasibility of measuring these processes at LEP2 and TESLA. The total cross-sections were estimated to be approximately equal to 40 fb and 120 fb for gamma-gamma to eta_c eta_c and gamma-gamma to eta_c + X respectively assuming exchange of elementary gluons that corresponds to the odderon with intercept equal to unity. These values can be enhanced by a factor equal to 1.9 and 2.1 for LEP2 and TESLA energies if the odderon intercept is equal to 1.07. The estimate of cross-sections sigma(e^+ e^- to e^+ e^- eta_c eta_c) and sigma (e^+ e^- to e^+ e^- eta_c + X) for untagged e^+ and e^- is also given.
Kwiecinski Jan
Motyka Leszek
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