Diffractive Neutral Pion Production, Chiral Symmetry and the Odderon
High Energy Physics - Phenomenology
2007-07-11 v1
Abstract
We discuss the diffractive photo- and electroproduction of a single neutral pion at high energies where it can occur due to odderon exchange. We show that this process is dynamically suppressed as a consequence of chiral symmetry. Our result reconciles earlier theoretical expectations with the non-observation of this reaction at HERA.
Cite
@article{arxiv.0707.1507,
title = {Diffractive Neutral Pion Production, Chiral Symmetry and the Odderon},
author = {Carlo Ewerz and Otto Nachtmann},
journal= {arXiv preprint arXiv:0707.1507},
year = {2007}
}
Comments
6 pages, based on invited talks given by C.E. at XVth International Workshop on Deep-Inelastic Scattering and Related Subjects (DIS 2007), Munich, April 2007, and by O.N. at 12th International Conference on Elastic and Diffractive Scattering (EDS07), DESY Hamburg, May 2007