Muon Magnetic Moment and the Goldstone Boson Higgs

Abstract

We compute the correction to the muon magnetic moment in theories where the Higgs is a pseudo-Goldstone boson and leptons are partially composite. Using a general effective lagrangian we show that in some regions of parameters a sizable new physics contribution to the magnetic moment can be obtained from composite fermions that could explain the 3.5$\sigma$ experimental discrepancy from the Standard Model prediction. This effect depends on the derivative interactions of the Higgs that do not modify the coupling of the Higgs to leptons and it does not require extremely light fermions, allowing to easily avoid LHC bounds. Our derivations can be in general applied to dipole operators in theories with Goldstone boson Higgs.

arXiv comment16 pages, 3 figures

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Cited by in corpus (7)

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• The Minimal Simple Composite Higgs Model
• Anarchy with linear and bilinear interactions
• Naturalness of lepton non-universality and muon g-2
• Composite Higgs Models, Technicolor and The Muon Anomalous Magnetic Moment
• Resolving Muon g-2 Anomaly With Partial Compositeness