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

A. V. Belitsky, A. Freund, D. Müller

Research output: Contribution to journalArticle

74 Scopus citations

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 script 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 script N = 1 supersymmetry relations.

Original languageEnglish (US)
Pages (from-to)347-406
Number of pages60
JournalNuclear Physics B
Volume574
Issue number1-2
DOIs
StatePublished - May 15 2000
Externally publishedYes

Keywords

  • Conformal constraints
  • Evolution equation
  • Supersymmetric constraints
  • Two-loop exclusive kernels

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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