The Polarized Structure Function g_2: A Lattice Study Revisited
arXiv:hep-ph/9909253
Abstract
A recent lattice calculation of the spin-dependent structure function g_2 is revisited. It has been recognized that the twist-three operator, which gives rise to d_2, mixes non-perturbatively with operators of lower dimensions under renormalization. This changes the results substantially.
Talk given by G. Schierholz at `Workshop on Polarized Protons at High Energies - Accelerator Challenges and Physics Opportunities', 17 - 20 May 1999, DESY, Hamburg, Germany