Vector meson production from a polarized nucleon

Details Vector meson production from a polarized nucleon Vector meson production from a polarized nucleon

2007-04-12

arxiv.org/abs/0704.1565v2

JHEP0709:064,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

31 pages, 2 figures. v2: added section on non-resonant contributions

Scientific paper

10.1088/1126-6708/2007/09/064

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.

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