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

Braun, V. M. and Ji, Yao and Manashov, A. N. (2023) Next-to-leading-power kinematic corrections to DVCS: a scalar target. JOURNAL OF HIGH ENERGY PHYSICS (1): 078. ISSN 1029-8479,

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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.

Item Type: Article
Uncontrolled Keywords: VIRTUAL COMPTON-SCATTERING; CONFORMAL-INVARIANCE; ANOMALOUS DIMENSIONS; EVOLUTION-EQUATIONS; OPERATORS; SYMMETRY; KERNELS; QCD; Properties of Hadrons; Specific QCD Phenomenology
Subjects: 500 Science > 530 Physics
Divisions: Physics > Institute of Theroretical Physics
Depositing User: Dr. Gernot Deinzer
Date Deposited: 11 Mar 2024 13:19
Last Modified: 11 Mar 2024 13:19
URI: https://pred.uni-regensburg.de/id/eprint/59647

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