Freund, Andreas and McDermott, Martin (2002) Next-to-leading order QCD analysis of deeply virtual Compton scattering amplitudes. PHYSICAL REVIEW D, 65 (7): 074008. ISSN 0556-2821
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We present a next-to-leading order (NLO) QCD analysis of unpolarized and polarized deeply virtual Compton scattering (DVCS) amplitudes, for two different input scenarios, in the (MS) over bar scheme. We illustrate and discuss the size of the NLO effects and the behavior of the amplitudes in skewedness, zeta, and photon virtuality, Q(2). In the unpolarized case, at fixed Q(2), we find a remarkable effective power-law behavior in zeta, akin to Regge factorization, over several orders of magnitude in zeta. We also quantify the ratio of real to imaginary parts of the DVCS amplitudes and their sensitivity to changes of the factorization scale.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | LIGHT-RAY OPERATORS; PARTON DISTRIBUTIONS; EVOLUTION-EQUATIONS; NONFORWARD DISTRIBUTIONS; NUCLEON; FACTORIZATION; KERNELS; PION; HERA; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 03 Nov 2021 09:42 |
| Last Modified: | 03 Nov 2021 09:42 |
| URI: | https://pred.uni-regensburg.de/id/eprint/40451 |
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