Gauge invariance of DVCS off an arbitrary spin hadron: the deuteron target case

Abstract

Using twist 3 contributions and the relations, which emanate from the QCD equations of motion, we derive the gauge invariant amplitude for the deeply virtual Compton scattering (DVCS) off hadron with an arbitrary spin. We emphasize that our derivation is not based on a certain parametrization of the relevant hadron matrix elements of the quark(gluon) operators. As an application, we present the gauge invariant amplitude for the DVCS off spin-one hadron. Using the derived gauge invariant amplitude, the single spin asymmetry is discussed.

9 pages, altered version

References in corpus (2)

• Operator product expansion in QCD in off-forward kinematics: Separation of kinematic and dynamical contributions
• Kinematic power corrections in off-forward hard reactions

Cited by in corpus (7)

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• Deuteron gravitational form factors, generalized parton distributions, and charge density in the framework of the soft-wall AdS/QCD model
• On $\xi$-process for DVCS-amplitude