A lattice calculation of the nucleon's spin-dependent structure function g_2 revisited

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dc.creatorGockeler, M.
dc.creatorHorsley, R.
dc.creatorKurzinger, W.
dc.creatorOelrich, H.
dc.creatorPleiter, D.
dc.creatorRakow, P. E. L.
dc.creatorSchafer, A.
dc.creatorSchierholz, G.
dc.date2000-11-30
dc.date.accessioned2026-07-07T11:47:00Z
dc.date.available2026-07-07T11:47:00Z
dc.descriptionOur previous calculation of the spin-dependent structure function g_2 is revisited. The interest in this structure function is to a great extent motivated by the fact that it receives contributions from twist-two as well as from twist-three operators already in leading order of 1/Q^2 thus offering the unique possibility of directly assessing higher-twist effects. In our former calculation the lattice operators were renormalized perturbatively and mixing with lower-dimensional operators was ignored. However, the twist-three operator which gives rise to the matrix element d_2 mixes non-perturbatively with an operator of lower dimension. Taking this effect into account leads to a considerably smaller value of d_2, which is consistent with the experimental data.
dc.description25 pages, 11 figures
dc.identifierhttps://arxiv.org/abs/hep-lat/0011091
dc.identifierhttp://arxiv.org/abs/hep-lat/0011091
dc.identifierPhys.Rev.D63:074506,2001
dc.identifierdoi:10.1103/PhysRevD.63.074506
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/202422
dc.subjectHigh Energy Physics - Lattice
dc.subjectHigh Energy Physics - Phenomenology
dc.titleA lattice calculation of the nucleon's spin-dependent structure function g_2 revisited
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