The evolution of the nonsinglet twist-3 parton distribution function

Details The evolution of the nonsinglet twist-3 parton distribution function The evolution of the nonsinglet twist-3 parton distribution function

1996-11-27

arxiv.org/abs/hep-ph/9611452v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages Latex An earlier version of this paper has been presented at the `3rd Meeting on the Prospects of Nucleon-Nucleon Spin

Scientific paper

The twist three contributions to the $Q^2$-evolution of the spin-dependent structure function $g_2(x_{Bj},Q^2)$ are considered in the non-local operator product approach. Defining appropriate twist three distribution function we derive their evolution equation for the nonsinglet case in leading order approximation. In the limit $x_{Bj} \rightarrow 1$ as well as in the large $N_c$ limit we confirm the result that the evolution of the nonsinglet part of $g_2$ is governed by a Gribov-Lipatov-Altarelli-Parisi equation.

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