We compute next-to-leading order virtual two-loop corrections to the process $gg\to ZZ$ in the low- and high-energy limits, considering the contributions with virtual top quarks. Analytic results for all 20 form factors are presented including expansion terms up to $1/m_t^{12}$ and $m_t^{32}$. We use a Pade approximation procedure to extend the radius of convergence of the high-energy expansion and apply this approach to the fini\ te virtual next-to-leading order corrections.

中文翻译：

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gg → ZZ：低能区和高能区的分析双回路结果

考虑到虚拟顶夸克的贡献，我们在低能量和高能量限制下计算对过程 $gg\to ZZ$ 的次前导阶虚拟双环修正。显示了所有 20 种形状因子的分析结果，包括高达 $1/m_t^{12}$ 和 $m_t^{32}$ 的扩展项。我们使用 Pade 近似程序来扩展高能膨胀的收敛半径，并将这种方法应用于有限的虚拟次前序修正。