Twist Four in Electroproduction: Canonical Operators and Coefficient Functions
Jan, 198240 pages
Published in:
- Phys.Rev.D 26 (1982) 49-68
Report number:
- MIT-CTP-954-REV,
- MIT-CTP-954
Citations per year
Abstract: (APS)
The interpretation of observed scaling violations in leptoproduction is complicated by the possible presence of significant higher-twist effects. We refine the machinery of the operator-product expansion sufficiently for a study of twist-4 effects. In particular, we introduce and review the advantages of a special, "canonical" basis. We demonstrate that the canonical basis is adequate for the necessary twist-4 perturbative calculations, and calculate the operators' tree-level coefficient functions in electroproduction. Our results establish a framework within which careful analysis of more accurate data can provide information regarding correlations among the constituents of the proton.- ELECTRON NUCLEON: DEEP INELASTIC SCATTERING
- DEEP INELASTIC SCATTERING: ELECTRON NUCLEON
- EFFECT: HIGHER-TWIST
- SCALING: VIOLATION
- GAUGE FIELD THEORY: OPERATOR PRODUCT EXPANSION
- QUANTUM CHROMODYNAMICS
- RENORMALIZATION GROUP
- NUCLEON: STRUCTURE FUNCTION
- FEYNMAN GRAPH: HIGHER-ORDER
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