We provide a framework to analyze the electroproduction process ep -> ep rho with a polarized target, writing the angular distribution of the rho decay products in terms of spin density matrix elements that parameterize the hadronic subprocess gamma* p -> rho p. Using the helicity basis for both photon and meson, we find a representation in which the expressions for a polarized and unpolarized target are related by simple substitution rules.
@article{arxiv.0704.1565,
title = {Vector meson production from a polarized nucleon},
author = {M. Diehl},
journal= {arXiv preprint arXiv:0704.1565},
year = {2008}
}
Comments
31 pages, 2 figures. v2: added section on non-resonant contributions