Speaker
Fabian Lange
(KIT)
Description
Quark form factors are important building blocks for several processes studied at the LHC, for example Higgs boson production and decay as well as top-pair production. I will present our calculation of massive quark form factors at three loops in QCD including both singlet and non-singlet contributions. After reducing the Feynman integrals in the amplitudes to master integrals, these were computed by solving differential equations. By constructing expansions around regular as well as singular points and numerical matching, we obtain sufficient precision over the whole kinematic range.
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Authors
Fabian Lange
(KIT)
Kay Schönwald
Dr
Matteo Fael
(KIT Karlsruhe)
Matthias Steinhauser
