Twist-three observables in deeply virtual Compton scattering on the nucleon

Details Twist-three observables in deeply virtual Compton scattering on the nucleon Twist-three observables in deeply virtual Compton scattering on the nucleon

2001-03-30

arxiv.org/abs/hep-ph/0103343v2

Phys.Lett. B510 (2001) 117-124

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, LaTeX

Scientific paper

10.1016/S0370-2693(01)00608-6

We study twist-three effects in deeply virtual Compton scattering on an unpolarized spin-1/2 target. A careful definition of observables as Fourier moments w.r.t. the azimuthal angle allows for a clear separation of twist-two and -three effects. Although the latter are power suppressed, they give leading contributions to the twist-three asymmetries and do not affect the twist-two observables.

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