Tools and techniques for higher order corrections and their application to LHC phenomenology are presented. The process pp->W
+W
-bb
- is calculated at NLO QCD. Improvements of two methods for the calculation of multi-loop Feynman integrals are presented: the differential equation method and sector decomposition. A new geometric sector decomposition algorithm and its implementation in the public program SecDec-3.0 are shown. The NLO QCD corrections to the production of two Higgs bosons in gluon fusion with full top quark mass dependence are calculated, the appearing two-loop integrals are obtained using sector decomposition.
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Tools and techniques for higher order corrections and their application to LHC phenomenology are presented. The process pp->W
+W
-bb
- is calculated at NLO QCD. Improvements of two methods for the calculation of multi-loop Feynman integrals are presented: the differential equation method and sector decomposition. A new geometric sector decomposition algorithm and its implementation in the public program SecDec-3.0 are shown. The NLO QCD corrections to the production of two Higgs bosons in gluon fus...
»