Fine structure of spectrum of twist-three operators in QCD

Details Fine structure of spectrum of twist-three operators in QCD Fine structure of spectrum of twist-three operators in QCD

1999-02-16

arxiv.org/abs/hep-ph/9902361v2

Phys.Lett. B453 (1999) 59-72

Physics

High Energy Physics

High Energy Physics - Phenomenology

16 pages, LaTeX, 5 figures

Scientific paper

10.1016/S0370-2693(99)00326-3

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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