Ahmed Taushif, Mahakhud Maguni, Rana Narayan, Ravindran V
RECAPP, Harish-Chandra Research Institute, Allahabad, India.
The Institute of Mathematical Sciences, Chennai, India.
Phys Rev Lett. 2014 Sep 12;113(11):112002. doi: 10.1103/PhysRevLett.113.112002. Epub 2014 Sep 11.
The recent computation on the full threshold contributions to Higgs boson production at next to next to next to leading order (N^{3}LO) in QCD contains valuable information on the soft gluons resulting from virtual and real emission partonic subprocesses. We use those from the real emissions to obtain the corresponding soft gluon contributions to Drell-Yan production and determine the missing δ(1-z) part of the N^{3}LO. The numerical impact of threshold effects demonstrates the importance of our results in the precision study with the Drell-Yan process at the LHC.
近期关于 QCD 中次下下领头阶（N³LO）希格斯玻色子产生的全阈值贡献的计算，包含了关于由虚拟和实发射部分子过程产生的软胶子的宝贵信息。我们利用实发射的那些信息来获得对 Drell-Yan 产生的相应软胶子贡献，并确定 N³LO 中缺失的 δ(1 - z)部分。阈值效应的数值影响表明了我们的结果在大型强子对撞机上 Drell-Yan 过程的精确研究中的重要性。
