2009/03/31 by Peter Skands, Stefan Weinzierl · 2 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1103/physrevd.79.074021
published as Phys.Rev.D79:074021,2009 · 28 pages, version to be published
arxiv created 2009/04/06 · openalex publication_date 2009/04/24 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
It has been argued recently that parton showers based on color dipoles conflict with collinear factorization and do not lead to the correct Dokshitzer-Gribov-Lipatov-Altarelli-Parisi (DGLAP) equation. We show that this conclusion is based on an inappropriate assumption, namely, the choice of the gluon energy as evolution variable. We further show numerically that Monte Carlo programs based on dipole showers with ``infrared-sensible'' evolution variables reproduce the DGLAP equation both in asymptotic form as well as in comparison to the leading behavior of second-order QCD matrix elements.