Very constrained minimal supersymmetric standard models

2004/05/12 by John Ellis, Keith A. Olive, Yudi Santoso +1 · 2 citations
Mathematics · Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Gauge (firearms) #Materials science #Mathematics #Minimal Supersymmetric Standard Model #Noncommutative and Quantum Gravity Theories #Particle physics #Physics #Standard Model (mathematical formulation) #Supersymmetry #hep-ph

paper · pdf · doi:10.1103/physrevd.70.055005

published as Phys.Rev.D70:055005,2004 · 26 pages, 32 eps figures

arxiv created 2004/05/12 · openalex publication_date 2004/09/13 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We consider very constrained versions of the minimal supersymmetric extension of the standard model (VCMSSMs) which, in addition to constraining the scalar masses m₀ and gaugino masses m_1/2 to be universal at some input scale, impose relations between the trilinear and bilinear soft supersymmetry-breaking parameters A₀ and B₀. These relations may be linear, as in simple minimal supergravity models, or nonlinear, as in the Giudice-Masiero mechanism for generating the Higgs-mixing \ensuremathμ term. We discuss the application of the electroweak vacuum conditions in VCMSSMs, which may be used to make a prediction for tan\ensuremathβ as a function of m₀ and m_1/2 that is usually unique. We baseline the discussion of the parameter spaces allowed in VCMSSMs by updating the parameter space allowed in the CMSSM for fixed values of tan\ensuremathβ with no relation between A₀ and B₀ assumed a priori, displaying contours of B₀ for a fixed input value of A₀, incorporating the latest CDF/D0 measurement of m_t and the latest BNL measurement of g_\ensuremathμ\ensuremath-2. We emphasize that phenomenological studies of the CMSSM are frequently not applicable to specific VCMSSMs, notably those based on minimal supergravity, which require m₀=m_3/2 as well as A₀=B₀+m₀. We then display (m_1/2,m₀) planes for selected VCMSSMs, treating in a unified way the parameter regions where either a neutralino or the gravitino is the lightest supersymmetric particle. In particular, we examine in detail the allowed parameter space for the Giudice-Masiero model.

Citations

• Constraints on Trilinear Coupling Constant A₀ in minimal Supergravity Model
• Study of rare and hadronic B decays in BABAR
• Supersymmetric particle spectrum
• Higgs-boson pole masses in the MSSM with explicit CP violation
• Are heavy scalars natural in minimal supergravity?
• First‐Year Wilkinson Microwave Anisotropy Probe ( WMAP ) Observations: Preliminary Maps and Basic Results
• First‐Year Wilkinson Microwave Anisotropy Probe ( WMAP ) Observations: Determination of Cosmological Parameters
• Measurement of the Negative Muon Anomalous Magnetic Moment to 0.7 ppm

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