Fine structure of spectrum of twist-three operators in QCD

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111 Scopus citations

Abstract

We unravel the structure of the spectrum of the anomalous dimensions of the quark-gluon twist-3 operators which are responsible for the multiparton correlations in hadrons and enter as a leading contribution to several physical cross sections. The method of analysis is based on the recent finding of a non-trivial integral of motion for the corresponding Hamiltonian problem in multicolour limit which results into exact integrability of the three-particle system. Quasiclassical expansion is used for solving the problem. We address the chiral-odd sector as a case of study.

Original languageEnglish (US)
Pages (from-to)59-72
Number of pages14
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume453
Issue number1-2
DOIs
StatePublished - 1999
Externally publishedYes

Keywords

  • Evolution
  • Integrability
  • Spectrum of eigenvalues
  • Three-particle problem
  • Twist-three operators

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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