Expansion Techniques in Massive Quark Production: Results and Applications

Details Expansion Techniques in Massive Quark Production: Results and Applications Expansion Techniques in Massive Quark Production: Results and Applications

1999-01-17

arxiv.org/abs/hep-ph/9901330v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

21 pages, 15 figures. Presented at the 4th International Symposium on Radiative Corrections (RADCOR 98), Barcelona, 8-12 Sep 1

Scientific paper

Recent progress in the calculation of multi-loop, multi-scale diagrams is
reviewed. Expansion techniques combined with new developments in Computer
algebra allow to evaluate the R ratio for massive quarks up to order
$\alpha_s^2$ and, partly, even $\alpha_s^3$. Similar techniques can be applied
to Higgs- or Z-boson decays and mixed QCD and electroweak interactions.

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