We show that the asymmetry in the fractional energy of charm versus anticharm jets produced in high energy diffractive photoproduction is sensitive to the interference of the Odderon (C=−) and Pomeron (C=+) exchange amplitudes in QCD. We predict the dynamical shape of the asymmetry in a simple model and estimate its magnitude to be of the order 15% using an Odderon coupling to the proton which saturates constraints from proton-proton vs. proton-antiproton elastic scattering. Measurements of this asymmetry at HERA could provide firm experimental evidence for the presence of Odderon exchange in the high energy limit of strong interactions.
@article{arxiv.hep-ph/9904280,
title = {Odderon-Pomeron Interference},
author = {Stanley J. Brodsky and Johan Rathsman and Carlos Merino},
journal= {arXiv preprint arXiv:hep-ph/9904280},
year = {2009}
}
Comments
12 pages, 4 figures, Minor corrections, Main results unchanged, Contribution from photon exchange added, Numerical estimates updated and uncertainties clarified. To appear in Physics Letters B