Factorization of Twist-Four Gluon Operator Contributions

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

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High Energy Physics - Phenomenology

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http://salesiana.dossiersoluciones.com/handle/123456789/49307

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/hep-ph/9908411
 http://arxiv.org/abs/hep-ph/9908411

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arXiv