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Unitarity cuts and reduction to master integrals in d dimensions for one-loop amplitudes
Charalampos Anastasiou, Ruth Britto, Bo Feng +2
We present an alternative reduction to master integrals for one-loop amplitudes using a unitarity cut method in arbitrary dimensions. We carry out the reduction in two steps. The f…
Two-loop amplitudes and master integrals for the production of a Higgs boson via a massive quark and a scalar-quark loop
Charalampos Anastasiou, Stefan Beerli, Stefan Bucherer +2
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 am…
D-dimensional unitarity cut method
Charalampos Anastasiou, Ruth Britto, Bo Feng +2
We develop a unitarity method to compute one-loop amplitudes with massless propagators in d=4-2*epsilon dimensions. We compute double cuts of the loop amplitudes via a decompositio…
Combining Monte Carlo generators with next-to-next-to-leading order calculations: event reweighting for Higgs boson production at the LHC
Giovanna Davatz, Fabian Stoeckli, Charalampos Anastasiou +4
We study a phenomenological ansatz for merging next-to-next-to-leading order (NNLO) calculations with Monte Carlo event generators. We reweight them to match bin-integrated NNLO di…