强子对撞机中重夸克对产生的NNLO阶天线减法：非对角通道
Antenna subtraction at NNLO for heavy quark pair production at hadron colliders: the non-diagonal channels
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中文总结 AI 辅助
研究强子对撞机中重夸克对产生，通过天线减法形式在NNLO阶计算$qq$、$qq'$和$qg$通道，推导相关积分减法贡献，给出全色下$qg$通道的NNLO天线减法项，扩展积分天线库，验证计算，完善了相关通道的NNLO描述。
中文摘要 AI 辅助
我们给出了涉及通过QCD下一个到下一个领先阶的天线减法形式，在强子对撞机中重夸克对产生的$qq$、$qq'$和$qg$部分子通道的计算。该计算在全色下进行并在NNLOJET框架内实现。基于先前可用结果，我们通过推导实虚和双虚水平所需的积分减法贡献，完成了$qq$和$qq'$通道的NNLO处理。我们还首次给出了全色下与$qg$通道相关的NNLO天线减法项。计算需要几个新要素，包括大质量软因子和涉及积分大质量天线的卷积，从而扩展积分天线库以处理有大质量费米子的过程。我们通过解析红外极点抵消和与现有结果的数值比较来验证计算。这些结果完成了$qq$、$qq'$和$qg$通道的NNLO描述，是朝着在天线减法形式中对重夸克对产生进行完全微分NNLO处理迈出的重要一步。
英文摘要
We present the calculation involving the $qq$, $qq'$ and $qg$ partonic channels contributing to heavy-quark pair production at hadron colliders through next-to-next-to-leading order in QCD using the antenna subtraction formalism. The calculation is performed in full colour and implemented within the NNLOJET framework. Building upon previously available results, we complete the NNLO treatment of the $qq$ and $qq'$ channels by deriving the integrated subtraction contributions required at the real virtual and double-virtual levels. We further present for the first time the NNLO antenna subtraction terms related to the $qg$-channel in full colour. The calculation requires several new ingredients, including massive soft factors and convolutions involving integrated massive antennae thereby extending the integrated antenna library to cope with processes with massive fermions. We validate the calculation through analytic infrared pole cancellation and numerical comparisons with existing results. These results complete the NNLO description of the $qq$, $qq'$, and $qg$ channels and constitute an important step towards a fully differential NNLO treatment of heavy-quark pair production within the antenna subtraction formalism.
