English

Calculation of Massive 2-Loop Operator Matrix Elements with Outer Gluon Lines

High Energy Physics - Phenomenology 2008-11-26 v1

Abstract

Massive on-shell operator matrix elements and self-energy diagrams with outer gluon lines are calculated analytically at O(αs2)O(\alpha_s^2), using Mellin-Barnes integrals and representations through generalized hypergeometric functions. This method allows for a direct evaluation without decomposing the integrals using the integration-by-parts method.

Keywords

Cite

@article{arxiv.hep-ph/0702265,
  title  = {Calculation of Massive 2-Loop Operator Matrix Elements with Outer Gluon Lines},
  author = {I. Bierenbaum and J. Blümlein and S. Klein},
  journal= {arXiv preprint arXiv:hep-ph/0702265},
  year   = {2008}
}

Comments

1 Latex file, 1 style file, 3 figures