1997/04/01 by K. Agashe, M. Graesser · 4 citations
Physics and Astronomy · #Neutrino Physics Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1016/s0550-3213(97)00569-5
published as Nucl.Phys. B507 (1997) 3-34 · 42 pages, LaTexx, 4 eps figures
arxiv created 1997/04/01 · openalex publication_date 1997/12/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
The fine tuning in models of low energy gauge mediated supersymmetry breaking required to obtain the correct Z mass is quantified. To alleviate the fine tuning problem, a model with split (5+5) messenger fields is presented. This model has additional triplets in the low energy theory which get a mass of O(500) GeV from a coupling to a singlet. The improvement in fine tuning is quantified and the spectrum in this model is discussed. The same model with the above singlet coupled to the Higgs doublets to generate the μ term is also discussed. A Grand Unified version of the model is constructed and a known doublet-triplet splitting mechanism is used to split the messenger (5+5)'s. A complete model is presented and some phenomenological constraints are discussed.