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arXiv · 2011.12325

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

Long Chen·Gudrun Heinrich·Stephen P. Jones·Matthias Kerner·Jonas Klappert·Johannes Schlenk
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Abstract

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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Long Chen, Gudrun Heinrich, Stephen P. Jones, Matthias Kerner, Jonas Klappert, Johannes Schlenk. 2020-11-24. $ZH$ production in gluon fusion: two-loop amplitudes with full top quark mass dependence. https://doi.org/10.1007/jhep03(2021)125

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