Understanding the correlation between $(g-2{)}_{\mu }$ and $\mu \to e\gamma$ in the MSSM

Abstract

The supersymmetric contributions to the muon anomalous magnetic moment $a_{\mu }$ and to the decay $\mu \to e\gamma$ are given by very similar Feynman diagrams. Previous works reported correlations in specific scenarios, in particular if $a_{\mu }$ is dominated by a single diagram. In this work we give an extensive survey of the possible correlations. We discuss examples of single-diagram domination with particularly strong correlations, and provide corresponding benchmark parameter points. We show how the correlations are weakened by significant cancellations between diagrams in large parts of the MSSM parameter space. Nevertheless, the order of magnitude of $\text{BR}(\mu \to e\gamma )$ for a fixed flavor-violating parameter can often be predicted. We summarize the behavior by plotting the correlations as well as resulting bounds on the flavor-violating parameters under various assumptions on the MSSM spectrum.

30 pages, 16 figures. v2 matches published version: modified two figures for clarification, corrected typos and clarified parts of the text, added references

References in corpus (25)

• Final Report of the Muon E821 Anomalous Magnetic Moment Measurement at BNL
• Reevaluation of the Hadronic Contributions to the Muon g-2 and to alpha(MZ)
• Lepton-Flavor Violation via Right-Handed Neutrino Yukawa Couplings in Supersymmetric Standard Model
• Complete Tenth-Order QED Contribution to the Muon g-2
• (g-2)_mu and alpha(M_Z^2) re-evaluated using new precise data
• The Muon Anomalous Magnetic Dipole Moment in the Minimal Supersymmetric Standard Model
• The electroweak contributions to (g-2)_μ after the Higgs boson mass measurement
• The Muon Magnetic Moment and Supersymmetry
• Status of the Fermilab Muon (g-2) Experiment
• An Update of the HLS Estimate of the Muon g-2
• Constraints on SUSY Lepton Flavour Violation by rare processes
• MEG Upgrade Proposal
• Probing Bino Contribution to Muon g-2
• Flavour physics at large tan(beta) with a Bino-like LSP
• Dark matter and collider signatures of the MSSM
• Two-Loop Corrections to the Muon Magnetic Moment from Fermion/Sfermion Loops in the MSSM: Detailed Results
• Muon g-2 vs LHC in Supersymmetric Models
• LHC constraints on light neutralino dark matter in the MSSM
• Cornering light Neutralino Dark Matter at the LHC
• Non-decoupling two-loop corrections to (g-2)_μ from fermion/sfermion loops in the MSSM
• Constraining Supersymmetry using the relic density and the Higgs boson
• Constraints on lepton flavor violation in the MSSM from the muon anomalous magnetic moment measurement
• Naturalness of Neutralino Dark Matter
• Supersymmetric Relations Among Electromagnetic Dipole Operators
• pMSSM Studies at the 7, 8 and 14 TeV LHC

Cited by in corpus (21)

• New physics explanations of $a_{\mu }$ in light of the FNAL muon $g-2$ measurement
• GM2Calc: Precise MSSM prediction for $(g-2)$ of the muon
• Beyond Minimal Lepton Flavored Dark Matter
• Muon g-2 and Dark Matter suggest Non-Universal Gaugino Masses: $\mathbf{SU}(5)\times {\mathbf{A}}_4$ case study at the LHC
• A Call for New Physics : The Muon Anomalous Magnetic Moment and Lepton Flavor Violation
• Upper bounds on sparticle masses from muon g-2 and the Higgs mass and the complementarity of future colliders
• Resurrecting the minimal renormalizable supersymmetric SU(5) model
• Flavor Physics and CP Violation
• Lepton-Flavoured Scalar Dark Matter in Dark Minimal Flavour Violation
• Low-energy lepton physics in the MRSSM: $(g-2{)}_{\mu }$, $\mu \to e\gamma$ and $\mu \to e$ conversion
• A to Z of the Muon Anomalous Magnetic Moment in the MSSM with Pati-Salam at the GUT scale
• LFV and g-2 in non-universal SUSY models with light higgsinos
• Correlation Between Muon $g-2$ and $\mu \to e\gamma$
• Conversion-Driven Leptogenesis: A Testable Theory of Dark Matter and Baryogenesis at the Electroweak Scale
• Maximal Sfermion Flavor Violation in Super-GUTs
• Lepton-flavour violating decays in theories with dimension 6 operators
• The Muon Magnetic Moment and Physics Beyond the Standard Model
• Muon g-2 through a flavor structure on soft SUSY terms
• Flavoured $(g-2{)}_{\mu }$ with Dark Lepton Seasoning
• The mass-degenerate SM-like Higgs and anomaly of $(g-2{)}_{\mu }$ in $\mu$-term extended NMSSM
• Investigating the leptonic couplings of doubly charged scalars at the muon collider