论文标题
NNLO QCD校正对顶Quark对生产和衰减的Leptonic可观察物
NNLO QCD corrections to leptonic observables in top-quark pair production and decay
论文作者
论文摘要
我们计算了一组Quark对生产中的一组旋转相关性和差分分布，并衰减到Dilepton最终状态。这是第一次在QCD中的近临时到领先顺序进行这样的完整研究。提出和分析包容性和基准分布。发现NNLO QCD预测与数据之间的良好一致性。我们证明，可以使用基金水平数据对固定阶级计算进行高精度比较。提高和澄清了顶级夸克定义的微妙之处。发现其中一些对绝对阈值的顶级夸克对产生产生非常重大的影响。
We calculate a comprehensive set of spin correlations and differential distributions in top-quark pair production and decay to dilepton final states. This is the first time such a complete study is performed at next-to-next-to leading order in QCD. Both inclusive and fiducial distributions are presented and analyzed. Good agreement between NNLO QCD predictions and data is found. We demonstrate that it is possible to perform high-precision comparisons of fixed-order calculations with fiducial-level data. Subtleties of the top quark definition are raised and clarified. Some of those are found to have a very significant impact on top-quark pair production at absolute threshold.
