Evolution Kernels for Light-Ray Operators: Twist 2 and Twist 3 Contributions

Details Evolution Kernels for Light-Ray Operators: Twist 2 and Twist 3 Contributions Evolution Kernels for Light-Ray Operators: Twist 2 and Twist 3 Contributions

1997-05-29

arxiv.org/abs/hep-ph/9705459v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages latex, to appear in the Proceedings of the International Conference on Deep Inelastic Scattering, Chicago, April 1997,

Scientific paper

10.1063/1.53680

The general evolution kernels of the twist 2 light-ray operators for unpolarized and polarized deep inelastic scattering are calculated in ${\cal O}(\alpha_s)$. From these evolution kernels a series of special evolution equations can be derived, among them the Altarelli-Parisi equations and the evolution equation for the meson wave function. In the case of twist 3 the results of Balitzki and Braun are confirmed.

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