Evolution kernels of skewed parton distributions: Method and two-loop results

Belitsky, A. V. and Freund, A. and Mueller, D. (2000) Evolution kernels of skewed parton distributions: Method and two-loop results. NUCLEAR PHYSICS B, 574 (1-2). pp. 347-406. ISSN 0550-3213

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Abstract

We present a formalism and explicit results for two-loop flavor singlet evolution kernels of skewed parton distributions in the minimal subtraction scheme. This approach avoids explicit multiloop calculations in QCD and is based on the known pattern of conformal symmetry breaking in this scheme as well as constraints arising from the graded algebra of the N = 1 super Yang-Mills theory. The conformal symmetry breaking part of the kernels is deduced from commutator relations between scale and special conformal anomalies while the symmetric piece is recovered from the next-to-leading order splitting functions and N = 1 supersymmetry relations. (C) 2000 Elsevier Science B.V. All rights reserved.

Item Type: Article
Uncontrolled Keywords: VIRTUAL COMPTON-SCATTERING; TO-LEADING ORDER; WAVE-FUNCTIONS; LOGARITHMIC EVOLUTION; CONFORMAL OPERATORS; SPLITTING FUNCTIONS; QCD; FACTORIZATION; EQUATIONS; ELECTROPRODUCTION; evolution equation; two-loop exclusive kernels; conformal constraints; supersymmetric constraints
Subjects: 500 Science > 530 Physics
Divisions: Physics > Institute of Theroretical Physics
Depositing User: Dr. Gernot Deinzer
Date Deposited: 03 May 2022 09:11
Last Modified: 03 May 2022 09:11
URI: https://pred.uni-regensburg.de/id/eprint/42481

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