Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2008-03-21
Phys.Rev.Lett.100:241806,2008
Physics
High Energy Physics
High Energy Physics - Phenomenology
5 pages, 3 figures
Scientific paper
10.1103/PhysRevLett.100.241806
We present the two-loop QCD amplitude for the interaction of two gluons and a CP-even Higgs boson in the Minimal Supersymmetric Standard Model. We apply a novel numerical method for the evaluation of Feynman diagrams with infrared, ultraviolet and threshold singularities. We discuss subtleties in the ultraviolet renormalization of the amplitude with conventional dimensional regularization, dimensional reduction, and the four dimensional helicity scheme. Finally, we show numerical results for scenarios of supersymmetry breaking with a rather challenging phenomenology in which the Higgs signal in the MSSM is suppressed in comparison to the Standard Model.
Anastasiou Charalampos
Beerli Stefan
Daleo Alejandro
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