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

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

2007-02-26

arxiv.org/abs/hep-ph/0702265v1

Phys.Lett.B648:195-200,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

1 Latex file, 1 style file, 3 figures

Scientific paper

10.1016/j.physletb.2007.02.059

Massive on-shell operator matrix elements and self-energy diagrams with outer
gluon lines are calculated analytically at $O(\alpha_s^2)$, 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.

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