2022 Impact factor 4.4
Particles and Fields

Eur. Phys. J. C 20, 323-331
DOI: 10.1007/s100520100676

Diffractive $\eta_c$ photo-and electroproduction with the perturbative QCD Odderon

J. Bartels1, M.A. Braun2, D. Colferai1 and G.P. Vacca1

1  II. Institut für Theoretische Physik, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany
2  St. Petersburg University, Petrodvoretz, Ulyanovskaya 1, 198504, Russia

(Received: 18 March 2001 / Published online: 11 May 2001 -© Springer-Verlag / Società Italiana di Fisica 2001)

Using a set of new odderon states, we calculate their contribution to the diffractive $\eta_c$ photo- and electroproduction process. Compared to previous simple 3-gluon exchange calculations we find an enhancement of about one order of magnitude in the cross section. The t-dependence of the cross section exhibits a dip structure in the small t region.

© Società Italiana di Fisica, Springer-Verlag 2001