论文标题
彩色单线横截面的串联扩展
Collinear expansion for color singlet cross sections
论文作者
论文摘要
我们演示了如何在所有最终状态辐射的运动界限周围围绕一个界线呈界线的运动界面的颜色单孔产生的横截面，以延伸到传入的哈子之一。这种扩展在系统上可以改进，并且适用于大量的物理可观察物。我们通过在QCD扰动理论中近代到接头领先顺序（NNLO）的Gluon Fusion Higgs Boson生产横截面的速度分布的速度分布中获得前两个术语来证明该技术的生存能力。此外，我们说明了如何使用该技术来提取散射横截面的通用构建块，例如NNLO处的N果汁和横向动量束功能。
We demonstrate how to efficiently expand cross sections for color-singlet production at hadron colliders around the kinematic limit of all final state radiation being collinear to one of the incoming hadrons. This expansion is systematically improvable and applicable to a large class of physical observables. We demonstrate the viability of this technique by obtaining the first two terms in the collinear expansion of the rapidity distribution of the gluon fusion Higgs boson production cross section at next-to-next-to leading order (NNLO) in QCD perturbation theory. Furthermore, we illustrate how this technique is used to extract universal building blocks of scattering cross section like the N-jettiness and transverse momentum beam function at NNLO.
