Braun, V. M. and Ji, Yao and Manashov, A. N. (2025) Kinematic power corrections to deeply virtual Compton scattering to twist-six accuracy. PHYSICAL REVIEW D, 111 (7): 076011. ISSN 2470-0010, 2470-0029
Full text not available from this repository.Abstract
We calculate & eth;ffiffiffip-t=Q & THORN;k and & eth;m=Q & THORN;kpower corrections with k <= 4, where mis the target mass and tis the momentum transfer, to several key observables in deeply virtual Compton scattering (DVCS). We find that the power expansion is well convergent up to jtj=Q2 less than or similar to 1=4 for most of the observables, but is naturally organized in terms of 1=& eth;Q2 & thorn; t & THORN; rather than the nominal hard scale 1=Q2. We also argue that target mass corrections remain under control and do not endanger quantum chromodynamics (QCD) factorization for coherent DVCS on nuclei. These results remove an important source of uncertainties due to the frame dependence and violation of electromagnetic Ward identities in the QCD predictions for the DVCS amplitudes in the leading-twist approximation.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | EVOLUTION-EQUATIONS; KERNELS |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Braun > Group Vladimir Braun |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 16 Jul 2026 05:52 |
| Last Modified: | 16 Jul 2026 05:52 |
| URI: | https://pred.uni-regensburg.de/id/eprint/66579 |
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