Exotic hybrid mesons H, with quantum numbers J^{PC}= 1^{- +} may be copiously produced in the hard exclusive processes gamma^*(Q^2) gamma -> H and gamma^*(Q^2) P(p) -> H P(p') because they have a leading twist distribution amplitude with a sizable coupling constant f_H, which may be estimated through QCD sum rules. The reaction rates scale in the same way as the corresponding rates for usual mesons.
@article{arxiv.hep-ph/0509245,
title = {Hard production of exotic hybrid mesons},
author = {I. Anikin and B. Pire and L. Szymanowski and O. V. Teryaev and S. Wallon},
journal= {arXiv preprint arXiv:hep-ph/0509245},
year = {2007}
}
Comments
4 pages Latex, talk at XIth International Conference on Elastic and Diffractive Scattering Chateau de Blois, France, May 15 - 20, 2005