Transverse target-spin asymmetry associated with DVCS on the proton and a resulting model-dependent constraint on the total angular momentum of quarks in the nucleon

Abstract

Results are reported on the transverse target-spin asymmetry associated with deeply virtual Compton scattering on the proton, extracted from the data accumulated by the HERMES experiment in the years 2002-2004. By comparing the HERMES results and theoretical predications based on a phenomenological model of generalized parton distributions, a model-dependent constraint on the total angular momentum carried by quarks in the nucleon is obtained.

4 pages, 2 figures, to appear in the proceedings of the XIV International Workshop on Deep Inelastic Scattering (DIS2006), April 20th - 24th 2006, Tsukuba, Japan

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• Beam-helicity asymmetry in associated electroproduction of real photons $ep\to e\gamma \pi N$ in the $\Delta$-resonance region
• Chiral Quark Soliton Model and Nucleon Spin Structure Functions