The evolution of the nonsinglet twist-3 parton distribution function

1996/11/27 by B. Geyer, D. Müller, Geyer, B. +3
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.48550/arxiv.hep-ph/9611452

8 pages Latex An earlier version of this paper has been presented at the `3rd Meeting on the Prospects of Nucleon-Nucleon Spin Physics at HERA', JINR Dubna, 28-29 June 1996

arxiv created 1996/11/27 · arxiv updated 2009/11/30

Abstract

The twist three contributions to the Q²-evolution of the spin-dependent structure function g₂(x_Bj,Q²) 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 → 1 as well as in the large N_c limit we confirm the result that the evolution of the nonsinglet part of g₂ is governed by a Gribov-Lipatov-Altarelli-Parisi equation.

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