Factorization of Twist-Four Gluon Operator Contributions
High Energy Physics - Phenomenology
2007-05-23 v1
Abstract
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.
Cite
@article{arxiv.hep-ph/9908411,
title = {Factorization of Twist-Four Gluon Operator Contributions},
author = {Jochen Bartels and Claas Bontus and Hubert Spiesberger},
journal= {arXiv preprint arXiv:hep-ph/9908411},
year = {2007}
}
Comments
26 pages, 4 figures, 1 table, 9 footnotes, LaTeX, AMSMath, requires bm.sty