2007/09/30 by Krzysztof Rolbiecki, K. Rolbiecki, J. Kalinowski
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.76.115006
published as Phys.Rev.D76:115006,2007 · 14 pages, 5 figures
arxiv created 2007/10/17 · openalex publication_date 2007/12/06 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
Recently Osland and Vereshagin noticed, based on sample calculations of some box diagrams, that in unpolarized e+e^\ensuremath- collisions CP-odd effects in the nondiagonal chargino-pair production process are generated at one loop. Here we perform a full one-loop analysis of these effects and point out that in some cases the neglected vertex and self-energy contributions may play a dominant role. We also show that CP asymmetries in chargino production are sensitive not only to the phase of \ensuremathμ parameter in the chargino sector but also to the phase of stop trilinear coupling At.