2003/08/01 by Daijiro Suematsu, D. Suematsu
Physics and Astronomy · #Black Holes and Theoretical Physics #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1140/epjc/s2004-02058-1
published as Eur.Phys.J. C38 (2004) 359-366 · 17 pages, latex, 4 figures
arxiv created 2003/08/01 · openalex publication_date 2004/11/25 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/29
We study the μ problem and the radiative electroweak symmetry breaking in an extended gauge mediation supersymmetry breaking (GMSB) model, in which the messenger fields are assumed to couple to the different singlet fields due to the discrete symmetry. Since the spectrum of superpartners is modified, the constraint from the μ problem can be relaxed in comparison with the ordinary GMSB at least from the viewpoint of radiative symmetry breaking. We study the consistency of the values of μ and Bμ with the radiative electroweak symmetry breaking and also the mass spectrum of superpartners. We present such a concrete example in a supersymmetric SU(5) unified model which is constructed from a direct product gauge structure by imposing the doublet-triplet splitting.