SUSY Phases, the Electron Electric Dipole Moment and the Muon Magnetic Moment

Abstract

The electron electric dipole moment (d_e) and the muon magnetic moment anomaly (a_μ) recently observed at BNL are analyzed within the framework of SUGRA models with CP violating phases at the GUT scale. It is seen analytically that even if d_e were zero, there can be a large Bino mass phase (ranging from 0 to 2 π) with a corresponding large B soft breaking mass phase (of size ~< 0.5 with sign fixed by the experimental sign of a_μ). The dependence of the B phase on the other SUSY parameters, gaugino mass m_{1/2}, \tan β, A_0, is examined. The lower bound of a_μ determines the upper bound of m_{1/2}. It is shown analytically how the existence of a non-zero Bino phase reduces this upper bound (which would correspondingly lower the SUSY mass spectra). The experimental upper bound on d_e determines the range of allowed phases, and the question of whether the current bound on d_e requires any fine tuning is investigated. At the electroweak scale, the phases have to be specified to within a few percent. At the GUT scale, however, the B phase requires fine tuning below the 1% level over parts of the parameter space for low m_{1/2}, and if the current experimental bound on d_e were reduced by only a factor of 3-4, fine tuning below 1% would occur at both the electroweak and GUT scale over large regions of the parameter space. All accelerator constraints (m_h > 114 GeV, b -> s γ, etc.) and relic density constraints with all stau-neutralino co-annihilation processes are included in the analysis.

22 pages, latex, 14 figures

References in corpus (18)

• Precise Measurement of the Positive Muon Anomalous Magnetic Moment
• Muon anomalous magnetic dipole moment in supersymmetric theories
• The CMSSM Parameter Space at Large tan beta
• EDM Constraints in Supersymmetric Theories
• CP-Violating Phases in SUSY, Electric Dipole Moments, and Linear Colliders
• Supersymmetry and the Anomalous Anomalous Magnetic Moment of the Muon
• Coannihilation Effects in Supergravity and D-Brane Models
• Impact of Muon Anomalous Magnetic Moment on Supersymmetric Models
• Upper Limits on Sparticle Masses from g-2 and the Possibility for Discovery of Supersymmetry at Colliders and in Dark Matter Searches
• Combining the Muon Anomalous Magnetic Moment with other Constraints on the CMSSM
• Recent Result from E821 Experiment on Muon g-2 and Unconstrained Minimal Supersymemtric Standard Model
• Muon g-2, Dark Matter Detection and Accelerator Physics
• Cold Dark Matter detection in SUSY models at large tan(beta)
• Constraints on Explicit CP Violation from the Brookhaven Muon g-2 Experiment
• No-Scale Scenarios in the Light of New Measurement of Muon Anomalous Magnetic Moment
• Probing the messenger of supersymmetry breaking by the muon anomalous magnetic moment
• Neutron electric dipole moment: Constituent-dressing and compositeness
• Present and Future CP Measurements

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