2014/12/31 by Thomas Becher, Rikkert Frederix, Matthias Neubert +1 · 45 citations
Computer Science · Physics and Astronomy · #Computational Physics and Python Applications #Electroweak interaction #Factorization #Lepton #Logarithm #Pair production #Particle Detector Development and Performance #Particle physics theoretical and experimental studies #Production (economics) #Resummation #Weierstrass factorization theorem #hep-ph
paper · pdf · doi:10.1140/epjc/s10052-015-3368-y
published in The European Physical Journal C 75(4), 154 (Springer Science+Business Media) · 26 pages, 9 figures. v2: journal version
openalex publication_date 2015/04/01 · arxiv created 2015/04/02 · arxiv updated 2015/06/23 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
In electroweak-boson production processes with a jet veto, higher-order corrections are enhanced by logarithms of the veto scale over the invariant mass of the boson system. In this paper, we resum these Sudakov logarithms at next-to-next-to-leading logarithmic accuracy and match our predictions to next-to-leading-order (NLO) fixed-order results. We perform the calculation in an automated way, for arbitrary electroweak final states and in the presence of kinematic cuts on the leptons produced in the decays of the electroweak bosons. The resummation is based on a factorization theorem for the cross sections into hard functions, which encode the virtual corrections to the boson production process, and beam functions, which describe the low-[Formula: see text] emissions collinear to the beams. The one-loop hard functions for arbitrary processes are calculated using the MadGraph5aMC@NLO framework, while the beam functions are process independent. We perform the resummation for a variety of processes, in particular for [Formula: see text] pair production followed by leptonic decays of the [Formula: see text] bosons.