$ZH$ production in gluon fusion: two-loop amplitudes with full top quark mass dependence

24 Nov 2020 · Long Chen, Gudrun Heinrich, Stephen P. Jones, Matthias Kerner, Jonas Klappert, Johannes Schlenk ·

We present results for the two-loop helicity amplitudes entering the NLO QCD corrections to the production of a Higgs boson in association with a $Z$-boson in gluon fusion. The two-loop integrals, involving massive top quarks, are calculated numerically. Results for the interference of the finite part of the two-loop amplitudes with the Born amplitude are shown as a function of the two kinematic invariants on which the amplitudes depend.

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$ZH$ production in gluon fusion: two-loop amplitudes with full top quark mass dependence

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