Deep Electroproduction of Photons and Mesons on the Deuteron

Details Deep Electroproduction of Photons and Mesons on the Deuteron Deep Electroproduction of Photons and Mesons on the Deuteron

2003-07-18

arxiv.org/abs/hep-ph/0307231v3

Eur.Phys.J. A19 (2004) 423-438

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, 15 figures,revised version, minor changes, to be published in EPJA. Misprint in definitionof charge asymmetry correc

Scientific paper

10.1140/epja/i2003-10127-x

We study deeply virtual Compton scattering and deep exclusive meson electroproduction on a deuteron target. We model the Generalized Quark Distributions in the deuteron by using the impulse approximation for the lowest Fock-space state on the light-cone. We study the properties of the resulting GPDs, and verify that sum rules violations are quite small in the impulse approximation. Numerical predictions are given for the unpolarized cross sections and polarization asymmetries for the kinematical regimes relevant for JLab experiments and for HERMES at HERA. We conclude that the signal of coherent scattering on the deuteron is comparable to the one on the proton at least for low momentum transfer, providing support to the feasibility of the experiments. The short distance structure of the deuteron may thus be scrutinized in the near future.

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