Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2006-11-17
JHEP 0701:082,2007
Physics
High Energy Physics
High Energy Physics - Phenomenology
Scientific paper
10.1088/1126-6708/2007/01/082
We compute all two-loop master integrals which are required for the evaluation of next-to-leading order QCD corrections in Higgs boson production via gluon fusion. Many two-loop amplitudes for 2 -> 1 processes in the Standard Model and beyond can be expressed in terms of these integrals using automated reduction techniques. These integrals also form a subset of the master integrals for more complicated 2 -> 2 amplitudes with massive propagators in the loops. As a first application, we evaluate the two-loop amplitude for Higgs boson production in gluon fusion via a massive quark. Our result is the first independent check of the calculation of Spira, Djouadi, Graudenz and Zerwas. We also present for the first time the two-loop amplitude for gg -> h via a massive squark.
Anastasiou Charalampos
Beerli Stefan
Bucherer Stefan
Daleo Alejandro
Kunszt Zoltan
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