2005/05/19 by Matteo Beccaria, Edoardo Mirabella
Physics and Astronomy · #Cosmology and Gravitation Theories #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #hep-ph
paper · pdf · doi:10.1103/physrevd.71.115016
published as Phys.Rev. D71 (2005) 115016 · 22 pages, 7 eps figures
arxiv created 2005/05/19 · openalex publication_date 2005/06/28 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Electroweak radiative corrections can be evaluated in the Sudakov approximation, a systematic high-energy expansion known to be relevant for the analysis of future collider experiments in the TeV energy range. In the minimal supersymmetric standard model and at next-to-leading order, Sudakov electroweak corrections satisfy remarkable relations at the one-loop level. Explicit computations in component fields are available for various different 2\ensuremath→2 processes relevant for linear collider or CERN LHC physics. The Sudakov corrections turn out to be equal or closely related in several classes of processes differing by the replacement of certain final or initial states with their superpartners. This fact suggests that supersymmetry is partially restored at high energy. We analyze the supersymmetric structure of such relations by computing the Sudakov corrections in the framework of superfield perturbation theory. As a simple application, we derive in full details an extended complete set of supersymmetric relations among different processes related by supersymmetry to the fundamental fermion pair production process e+e^\ensuremath-\ensuremath→ff.