Factorization of Twist-Four Gluon Operator Contributions

Details Factorization of Twist-Four Gluon Operator Contributions Factorization of Twist-Four Gluon Operator Contributions

1999-08-19

arxiv.org/abs/hep-ph/9908411v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

26 pages, 4 figures, 1 table, 9 footnotes, LaTeX, AMSMath, requires bm.sty

Scientific paper

We consider diagrams with up to four t-channel gluons in order to specify gluonic twist-four contributions to deep inelastic structure functions. This enables us to extend the method developed by R.K.Ellis, W.Furmanski, and R.Petronzio (EFP) to the gluonic case. The method is based on low-order Feynman diagrams in combination with a dimensional analysis. It results in explicitly gauge invariant expressions for the factorization of twist-four gluon-operator matrix elements and the corresponding coefficient functions.

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