Belitsky, A. V. and Schäfer, Andreas (1998) Higher orders and infrared renormalon phenomenology in deeply virtual Compton scattering. NUCLEAR PHYSICS B, 527 (1-2). pp. 235-263. ISSN 0550-3213, 1873-1562
Full text not available from this repository.Abstract
We present results for higher-order perturbative corrections to Compton scattering in the generalized Bjorken kinematics. The approach we have used is based on the combination of two techniques: conformal operator product expansion on the one side, and resummation of the fermion vacuum insertions with consequent restoration of the full QCD p-function via the naive non-abelianization assumption, on the other. These are terms which are lost in the former approach. Due to the presence of the infrared renormalon poles in the Borel transform of the resummed amplitude the latter suffers from ambiguities which reflect the asymptotic character of perturbation series. The residues of these IR renormalon poles give an estimate for the size of power corrections in deeply virtual Compton scattering. (C) 1998 Elsevier Science B.V.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | PARTON DISTRIBUTION-FUNCTIONS; QUARK EFFECTIVE THEORY; LIGHT-CONE OPERATORS; INELASTIC-SCATTERING; ANOMALOUS DIMENSIONS; EVOLUTION-EQUATIONS; DISTRIBUTION AMPLITUDE; GAUGE THEORIES; WAVE-FUNCTIONS; LEADING ORDER; deeply virtual Compton scattering; conformal operator product expansion; renormalons; higher twists |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Schäfer > Group Andreas Schäfer |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 16 Feb 2023 10:07 |
| Last Modified: | 16 Feb 2023 10:07 |
| URI: | https://pred.uni-regensburg.de/id/eprint/49578 |
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