Quark Spin-flip in Pomeron Exchange
High Energy Physics - Phenomenology
2007-05-23 v1
Abstract
It has been shown that the energy dependence of the reaction gamma p --> b1(1235) requires a contribution from pomeron exchange. This necessitates spin-flip at the quark level as the transition is from a 3S1 state to a 1P1 state. The same mechanism occurs in the reaction pi p --> a1(1260) p, which is a 1S0 to 3P1 transition.
Cite
@article{arxiv.hep-ph/0508262,
title = {Quark Spin-flip in Pomeron Exchange},
author = {A Donnachie},
journal= {arXiv preprint arXiv:hep-ph/0508262},
year = {2007}
}
Comments
Summary of talk given at the XIth International Conference on Elastic and Diffractive Scattering, Chateau de Blois, France, May 15-20, 2005