2018 Impact factor 4.843
Particles and Fields
Eur. Phys. J. C 5, 317-326
DOI 10.1007/s100529800844

Single pseudoscalar meson production
in diffractive ep scattering

W. Kilian - O. Nachtmann

Institut für Theoretische Physik, Universität Heidelberg, Philosophenweg 16, D-69120 Heidelberg, Germany
(e-mail: W.Kilian@thphys.uni-heidelberg.de, O.Nachtmann@thphys.uni-heidelberg.de)

Received: 18 December 1997 / Published online: 10 March 1998

Abstract
Exclusive pseudoscalar meson production in ep scattering at high energies is a direct probe for a possible ``odderon'' exchange in soft hadronic processes. Using a simple phenomenological ansatz for the odderon, we demonstrate how it can be separated from the contribution due to photon-photon fusion, and the relevant parameters be measured. Total cross sections and differential distributions are presented for $\pi^0,\eta,\eta'$, and $\eta_c$ production. Results are given from both a full calculation and one using the equivalent photon approximation. The accuracy of the latter is discussed.


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