Towards a NNLO calculation in hadronic heavy hadron production

Details Towards a NNLO calculation in hadronic heavy hadron production Towards a NNLO calculation in hadronic heavy hadron production

2004-04-07

arxiv.org/abs/hep-ph/0404069v1

Springer Proc.Phys.98:477-480,2005

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, 2 Postscript figures

Scientific paper

We calculate the Laurent series expansion up to ${\cal O}(\epsilon^2)$ for all scalar one-loop one-, two-, three- and four-point integrals that are needed in the calculation of hadronic heavy flavour production. The Laurent series up to ${\cal O}(\epsilon^2)$ is needed as input to that part of the NNLO corrections to heavy hadron production at hadron colliders where the one-loop integrals appear in the loop-by-loop contributions. The four-point integrals are the most complicated. The ${\cal O}(\epsilon^2)$ expansion of the four-point integrals contains polylogarithms up to $ Li_4$ and the multiple polylogarithms.

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