One loop corrections to the Neutralino sector and Radiative Electroweak Breaking in the MSSM

Abstract

We compute one loop radiative corrections to the physical neutralino masses in the MSSM considering the dominant top-stop contributions. We present a numerical renormalization group analysis of the feasibility of the radiative gauge symmetry breaking parametrized by the standard soft supersymmetry breaking terms. Although the above computed effects can be in principle large for extreme values of the Yukawa couplings, they do not in general exceed a few per cent for most of the parameter space. Therefore tree level constraints imposed on the gluino mass $m_{\tilde{g}}$ and on the superpotential parameter $\mu$ by LEP1 and CDF experiments, are not upset by the heavy top-stop sector.

15 pages + 1 fig. in PS at the end of the paper. CERN TH.7089/93, IOA 297, NTUA 42/93

References in corpus (5)

• On the Unification of Couplings in the Minimal Supersymmetric Standard Model
• Calculable Upper Limit on the Mass of the Lightest Higgs Boson in Any Perturbatively Valid Supersymmetric Theory
• Bottom-Up Approach to Uniefied Supergravity Models
• Aspects of Radiative Electroweak Symmetry Breaking in Supergravity Models
• Proposed Tests for Minimal SU(5) Supergravity at Fermilab, Gran Sasso, SuperKamiokande, and LEP

Cited by in corpus (45)

• Precision Corrections in the Minimal Supersymmetric Standard Model
• DarkSUSY: Computing Supersymmetric Dark Matter Properties Numerically
• SuSpect: a Fortran Code for the Supersymmetric and Higgs Particle Spectrum in the MSSM
• Neutralino Relic Density including Coannihilations
• Positron Propagation and Fluxes from Neutralino Annihilation in the Halo
• WMAP Constraints, SUSY Dark Matter and Implications for the Direct Detection of SUSY
• Clumpy Neutralino Dark Matter
• DarkSUSY 6 : An Advanced Tool to Compute Dark Matter Properties Numerically
• Cosmic antiprotons as a probe for supersymmetric dark matter?
• Light Higgsino Dark Matter
• Physics at the e+ e- Linear Collider
• The cosmic ray positron excess and neutralino dark matter
• Charginos and Neutralinos in the Light of Radiative Corrections: Sealing the Fate of Higgsino Dark Matter
• Implications of muon anomalous magnetic moment for supersymmetric dark matter
• Detection of Neutralino Annihilation Photons from External Galaxies
• The complete radiative corrections to the gaugino and Higgsino masses in the Minimal Supersymmetric Model
• Neutralino Dark Matter Detection in Split Supersymmetry Scenarios
• Scrutinizing LSP Dark Matter at the LHC
• One-loop corrections to the chargino and neutralino mass matrices in the on-shell scheme
• Neutralino Gamma-ray Signals from Accreting Halo Dark Matter
• Mass Degeneracy of the Higgsinos
• How light a higgsino or a wino dark matter can become in a compressed scenario of MSSM
• Analysis of the chargino and neutralino mass parameters at one-loop level
• Exploring MSSM for Charge and Color Breaking and Other Constraints in the Context of Higgs@125 GeV
• Precise Predictions for Higgs Production in Neutralino Decays in the Complex MSSM
• Improved constraints on supersymmetric dark matter from muon g-2
• One-loop calculations of the decay of the next-to-lightest neutralino in the MSSM
• Radiative Electroweak symmetry breaking in the MSSM and Low Energy Thresholds
• Determination of Fundamental Supersymmetry Parameters from Chargino Production at Lepii
• Probing Dark Matter with Disappearing Tracks at the LHC
• Neutralino Production as SuSy Discovery Process at CERN LEP2
• Neutralino Production and Decay at an e^+e^- Linear Collider with Transversely Polarized Beams
• Neutralino Decays in the Complex MSSM at One-Loop: a Comparison of On-Shell Renormalization Schemes
• Neutralino Dark Matter in BMSSM Effective Theory
• Consistent on shell renormalisation of electroweakinos in the complex MSSM: LHC and LC predictions
• One-loop effects on MSSM parameter determination via chargino production at the LC
• Large Top and Bottom Yukawa Couplings in Minimal Supersymmetry
• Natural SUSY at LHC with Right-Sneutrino LSP
• Neutralino-nucleon interaction in the Split SUSY scenario of the Dark Matter
• Closing the Light Gluino Window in Supersymmetric Grand Unified Models
• Report of the 1997 LEP2 Phenomenology Working Group on `Searches' (Oxford)
• Precision gaugino mass measurements as a probe of large trilinear soft terms at ILC
• String and string-inspired phenomenology
• Effective field theory analysis of composite higgsino-like and wino-like thermal relic dark matter
• The loop effects on the chargino decays ${\tilde{\chi }}_1^{\pm }\to {\tilde{\chi }}_1^{0}f{f}^{\prime }$ in the MSSM