We investigate the nucleon's twist-3 spin structure functions based on QCD. Explicit definitions of relevant twist-3 parton distributions are given as nucleon matrix elements of nonlocal light-cone operators, and their renormalization and the Q2-evolution are discussed. We show that the twist-3 part
Higher-twist corrections to nucleon structure functions from lattice QCD
✍ Scribed by S. Capitani; M. Göckeler; R. Horsley; D. Petters; D. Pleiter; P. Rakow; G. Schierholz
- Publisher
- Elsevier Science
- Year
- 1999
- Tongue
- English
- Weight
- 213 KB
- Volume
- 79
- Category
- Article
- ISSN
- 0920-5632
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✦ Synopsis
A genuinely non-perturbative evaluation of higher-twist contributions to the structure functions of the nucleon, with all mixing effects and renormalon ambiguities taken care of, is presented. Higher-twist corrections turn out to be significant at moderate values of q2.
📜 SIMILAR VOLUMES
Results for nucleon matrix elements (arising from moments of structure functions) and form factors from a mixture of runs using Wilson, clover and overlap fermions (both quenched and unquenched) are presented and compared in an effort to explore the size of the chiral 'regime', lattice spacing error