Implications of the Higgs boson searches on different soft SUSY-breaking scenarios

2001/06/30 by S. Ambrosanio, Athanasios Dedes, A. Dedes +4 · 4 citations
Physics and Astronomy · #Boson #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Higgs boson #Particle physics #Particle physics theoretical and experimental studies #Physics #Supersymmetry #Supersymmetry breaking #hep-ph

paper · pdf · doi:10.1016/s0550-3213(01)00654-x

published as Nucl.Phys. B624 (2002) 3-44 · 41 pages, 21 figures (26 eps files). A full ps file embedding better quality plots can be downloaded from http://quark.phy.bnl.gov/~heinemey/uni/paper/publ01.html Minor changes, references added. Version to appear in Nucl. Phys. B

arxiv created 2001/12/17 · openalex publication_date 2002/03/01 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We investigate the Higgs boson sector of the Minimal Supersymmetric Standard Model (MSSM) in the framework of the three most prominent soft SUSY-breaking scenarios, mSUGRA, MGMSB and mAMSB. For each scenario, we determine the parameters at the electroweak scale from the set of input variables at higher energy scales (depending on the specific scenario) and evaluate the Higgs boson properties. The latter are based on results obtained within the Feynman-diagrammatic approach by taking into account the complete one-loop and the dominant two-loop contributions. The maximum value of the mass of the lightest neutral CP-even MSSM Higgs boson, m_h, is determined in the three scenarios, and the behavior of the Higgs couplings to fermions and gauge bosons is investigated. Restrictions on tan beta and on the set of higher-energy scale parameters are derived from the lower limits arising from the Higgs search at LEP2. We furthermore discuss the regions of parameter space in the three scenarios compatible with interpreting the excess observed at LEP2 as a Higgs signal, with m_h = (115.0 + 1.3 - 0.9) GeV. The case where the events observed at LEP2 could originate from the production of the heavier neutral CP-even Higgs boson is also considered. The implications of a possible Higgs signal at 115 GeV for SUSY searches at future colliders are briefly discussed for each of the three scenarios.

Citations

• Supersymmetric particle spectrum
• Sparticle spectroscopy and electroweak symmetry breaking with gauge-mediated supersymmetry breaking
• Non-universal soft scalar masses in supersymmetric theories
• Regularization dependence of running couplings in softly broken supersymmetry
• Weak symmetry breaking by radiative corrections in broken supergravity
• Complete two-loop dominant corrections to the mass of the lightest -even Higgs boson in the minimal supersymmetric standard model
• Supersymmetric relics from the big bang
• Charge and colour breaking constraints in the MSSM with non-universal SUSY breaking
• Review of Particle Physics

Cited by

• Implications of a 125 GeV Higgs boson for the MSSM and low-scale supersymmetry breaking
• Neutralino-nucleon cross section and charge and colour breaking constraints
• SUSY Predictions for the LHC
• Electroweak precision observables in the minimal supersymmetric standard model