Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1998-03-06
Phys.Atom.Nucl. 62 (1999) 1031-1042; Yad.Fiz. 62 (1999) 1098-1109
Physics
High Energy Physics
High Energy Physics - Phenomenology
43 pages, LaTeX
Scientific paper
The (electromagnetic or weak) current operator responsible for deep inelastic scattering (DIS) should be local and satisfy the well-known commutation relations with the representation operators of the Poincare group. The problem whether these conditions are compatible with the factorization theorem and operator product expansion is investigated in detail. We argue that the current operator contains a nontrivial nonperturbative part which contributes to DIS even in the Bjorken limit. Nevertheless there exists a possibility that many results of the standard theory remain.
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