标题： 高能和大$m_t$极限下的$gg\to ZH$虚拟修正 显示英文标题

标题： Virtual corrections to $gg\to ZH$ in the high-energy and large-$m_t$ limits

摘要： 我们计算过程$gg\to ZH$的部分截面的下一阶虚修正，在高能和大$m_t$极限下。 我们使用佩德近似来增大高能展开在$m_t^2/s$、$m_t^2/t$和$m_t^2/u$中的收敛半径，并表明可以在相当接近顶夸克对阈值的能量下获得精确结果。 我们给出了形式因子和下一阶虚截面的结果。 显示英文摘要

摘要： We compute the next-to-leading order virtual corrections to the partonic cross-section of the process $gg\to ZH$, in the high-energy and large-$m_t$ limits. We use Pad\'e approximants to increase the radius of convergence of the high-energy expansion in $m_t^2/s$, $m_t^2/t$ and $m_t^2/u$ and show that precise results can be obtained down to energies which are fairly close to the top quark pair threshold. We present results both for the form factors and the next-to-leading order virtual cross-section.