Probing Transversity in Electroproduction of Two Vector Mesons

Details Probing Transversity in Electroproduction of Two Vector Mesons Probing Transversity in Electroproduction of Two Vector Mesons

2004-01-21

arxiv.org/abs/hep-ph/0401157v1

Phys.Part.Nucl. 35 (2004) S67-S70

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, 1 eps. figure, presented by at SPIN-03 Workshop, Dubna, September 16-20

Scientific paper

Electroproduction of two vector mesons with a large rapidity gap between them provides the first feasible selective access to chiral-odd 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 chiral-odd GPD in the proton.

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