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arXiv · hep-ph/9902361

Fine structure of spectrum of twist-three operators in QCD

A. V. Belitsky
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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 bases 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.

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A. V. Belitsky. 1999-02-20. Fine structure of spectrum of twist-three operators in QCD. https://doi.org/10.1016/s0370-2693(99)00326-3

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