Probing Transversity in Electroproduction of Two Vector Mesons
Abstract
Electroproduction of two vector mesons with a large rapidity gap between them provides the first feasible selective access to chiralodd GPDs. The scattering amplitude of the process $ \gamma ^* N \to \rho_L^0 \rho_T^+ N'$ may be represented as a convolution of an impact factor describing the $\gamma ^* \to \rho_L^0$ transition and an amplitude describing the $N\to \rho_T^+ N'$ transition, analogously to deeply exclusive electroproduction of a meson, the virtual photon being replaced by a Pomeron. The production of a transversely polarized vector meson $\rho_T^+$ selects a chiralodd GPD in the proton.
 Publication:

arXiv eprints
 Pub Date:
 January 2004
 arXiv:
 arXiv:hepph/0401157
 Bibcode:
 2004hep.ph....1157I
 Keywords:

 High Energy Physics  Phenomenology
 EPrint:
 5 pages, 1 eps. figure, presented by at SPIN03 Workshop, Dubna, September 1620