Next-to-leading-power kinematic corrections to DVCS: a scalar target

Abstract

Using the recent results on the contributions of descendants of the leading twist operators to the operator product expansion of two electromagnetic currents we derive explicit expressions for the kinematic finite-$t$ and target mass corrections to the DVCS helicity amplitudes to the $1/Q^4$ power accuracy. The cancellation of IR divergences for kinematic corrections is demonstrated to all powers in the leading order of perturbation theory. We also argue that target mass corrections in the coherent DVCS from nuclei are small and do not invalidate the factorization theorem.

24 pages + appendices, 1 figure

References in corpus (8)

• Anomalous dimensions of high-spin operators beyond the leading order
• Towards a fitting procedure for deeply virtual Compton scattering at next-to-leading order and beyond
• Deeply virtual Compton scattering beyond next-to-leading order: the flavor singlet case
• Next-to-Next-to-Leading-Order QCD Prediction for the Photon-Pion Form Factor
• Two-loop coefficient function for DVCS: Vector contributions
• The axial-vector contributions in two-photon reactions: pion transition form factor and deeply-virtual Compton scattering at NNLO in QCD
• Higher-Order Kinematical Effects in Deeply Virtual Compton Scattering
• NNLO anomalous dimension matrix for twist-two flavor-singlet operators

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