Model-Independent Analysis of g_μ-2

Abstract

Assuming that the scale of new physics exceeds the weak scale, we have considered all possible origins of deviations from the Standard Model in $\gmu2$. If the underlying theory can be treated perturbatively, then to account for an effect as large as has been recently reported\cite{BNL}, the only possibilities would be models that contain particles that yield direct contributions, of which SUSY models are prototypical, or models having unexpectedly light leptoquarks or having a rather exotic heavy vector boson that couples predominantly to muons. Other possibilities either are already excluded by existing experimental results or would have to be unnaturally large. If, on the contrary, the underlying new physics involves strong interactions, as in technicolor models, then the discrepancy could be accounted for by a variety of effective operators.

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Cited by in corpus (14)

• Effective Theory Analysis of Precision Electroweak Data
• New physics explanations of $a_{\mu }$ in light of the FNAL muon $g-2$ measurement
• Gauged $L_{\mu }-L_{\tau }$ with Large Muon Anomalous Magnetic Moment and the Bimaximal Mixing of Neutrinos
• Indirect Search for Neutralino Dark Matter with High Energy Neutrinos
• Two-loop Barr-Zee type Contributions to $(g-2{)}_{\mu }$ in the MSSM
• Lepton-number violation and right-handed neutrinos in Higgs-less effective theories
• Lepton Dipole Moments and Rare Decays in the CP-violating MSSM with Nonuniversal Soft-Supersymmetry Breaking
• Muon anomalous magnetic moment in supersymmetric scenarios with an intermediate scale and nonuniversality
• Muon anomalous magnetic moment, $B\to X_s\gamma$ and dark matter detection in the string models with dilaton domination
• Effective Theories and Electroweak Precision Constraints
• Kaluza-Klein Theories and the Anomalous Magnetic Moment of the Muon
• Electric charge quantization and the muon anomalous magnetic moment
• Antisymmetric tensor contribution to the muon g-2
• HEFT approach to investigate the muon g-2 anomaly at a muon collider