2018/05/31 by Falko Dulat, Stefan Höche, Stefan Prestel · 3 citations
Mathematics · Physics and Astronomy · #Computational physics #Differential (mechanical device) #Dimension (graph theory) #Dipole #Gluon #High-Energy Particle Collisions Research #Loop (graph theory) #Mathematics #Monte Carlo method #Particle physics #Particle physics theoretical and experimental studies #Phase space #Physics #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum mechanics #Statistical physics #Subtraction #hep-ph
paper · pdf · doi:10.1103/physrevd.98.074013
published as Phys. Rev. D 98, 074013 (2018) · 22 pages, 8 figures
openalex created_date 2018/05/17 · openalex publication_date 2018/10/16 · arxiv created 2018/10/18 · arxiv updated 2018/10/22 · openalex updated_date 2026/08/05
We compute the next-to-leading-order corrections to soft-gluon radiation differentially in the one-emission phase space. We show that their contribution to the evolution of color dipoles can be obtained in a modified subtraction scheme, such that both one- and two-emission terms are amenable to Monte Carlo integration. The two-loop cusp anomalous dimension is recovered naturally upon integration over the full phase space. We present two independent implementations of the new algorithm in the two event generators Pythia and Sherpa, and we compare the resulting fully differential simulation to the Catani--Marchesini--Webber (CMW) scheme.