2014/11/13 by Charalampos Anastasiou, Claude Duhr, Anastasiou, Charalampos +12
Engineering · Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Superconducting Materials and Applications #hep-ph
paper · pdf · doi:10.48550/arxiv.1411.3584
arxiv created 2014/11/13 · arxiv updated 2014/11/14
In this article, we compute the gluon fusion Higgs boson cross-section at N3LO through the second term in the threshold expansion. This calculation constitutes a major milestone towards the full N3LO cross section. Our result has the best formal accuracy in the threshold expansion currently available, and includes contributions from collinear regions besides subleading corrections from soft and hard regions, as well as certain logarithmically enhanced contributions for general kinematics. We use our results to perform a critical appraisal of the validity of the threshold approximation at N3LO in perturbative QCD.