Fine structure of spectrum of twist-three operators in QCD

A. V. Belitsky

doi:10.1016/S0370-2693(99)00326-3

Fine structure of spectrum of twist-three operators in QCD

A. V. Belitsky

Research output: Contribution to journal › Article › peer-review

112 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 language	English (US)
Pages (from-to)	59-72
Number of pages	14
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	453
Issue number	1-2
DOIs	https://doi.org/10.1016/S0370-2693(99)00326-3
State	Published - 1999
Externally published	Yes

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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10.1016/S0370-2693(99)00326-3

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PY - 1999

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N2 - 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.

AB - 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.

KW - Evolution

KW - Integrability

KW - Spectrum of eigenvalues

KW - Three-particle problem

KW - Twist-three operators

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EP - 72

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 1-2

ER -

Fine structure of spectrum of twist-three operators in QCD

Abstract

Keywords

ASJC Scopus subject areas

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