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The European Physical Journal C
ISSN: 1434-6044 (printed version)
ISSN: 1434-6052 (electronic version)
Abstract Volume 5 Issue 2 (1998) pp 317-326
DOI 10.1007/s100529800844
theoretical physics:
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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Online publication: August 25, 1998
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