Top quark contribution to two-loop helicity amplitudes for Z boson pair production in gluon fusion

被引：0
|
作者：
Christian Brønnum-Hansen
Chen-Yu Wang
机构：
[1] Institute for Theoretical Particle Physics,
[2] KIT,undefined
来源：
Journal of High Energy Physics | / 2021卷
关键词：
Perturbative QCD; Scattering Amplitudes;
D O I：
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学科分类号：
摘要：
We compute the top quark contribution to the two-loop amplitude for on-shell Z boson pair production in gluon fusion, gg → ZZ. Exact dependence on the top quark mass is retained. For each phase space point the integral reduction is performed numerically and the master integrals are evaluated using the auxiliary mass flow method, allowing fast computation of the amplitude with very high precision.
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