2003/04/11 by Matteo Beccaria, Michael Melles, Fernand M. Renard +4 · 48 citations
Mathematics · Physics and Astronomy · #Economics #Fermion #High-Energy Particle Collisions Research #Loop (graph theory) #Mathematics #Particle physics #Particle physics theoretical and experimental studies #Physics #Production (economics) #Quantum Chromodynamics and Particle Interactions #Quantum electrodynamics #Scalar (mathematics) #Supersymmetry #hep-ph
paper · pdf · doi:10.1142/s0217751x03015702
published in International Journal of Modern Physics A 18(27), 5069-5098 (World Scientific) · 43 pages, 13 Encapsulated PostScript figures
arxiv created 2003/04/11 · openalex publication_date 2003/10/30 · arxiv updated 2014/11/17 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We consider the high energy behavior of the amplitudes for pair production of charged leptons, quarks, Higgs bosons, sleptons, squarks and charginos at lepton colliders. We give the general expressions of the leading quadratic and subleading linear logarithms that appear at the one-loop level, and derive the corresponding resummed expansions to subleading logarithmic order accuracy. Under the assumption of a relatively light SUSY scenario and choosing the MSSM as a specific model, we compare the predictions of the one-loop and of the resummed expansions at variable energy. We show that the two predictions are very close in the one TeV regime, but drastically differ in the few (2,3) TeV range.