Minimal muon anomalous magnetic moment

Abstract

We classify all possible one-particle (scalar and fermion) extensions of the Standard Model that can contribute to the anomalous magnetic moment of leptons. We review the cases already discussed in the literature and complete the picture by performing the calculation for a fermionic doublet with hypercharge -3/2. We conclude that, out of the listed possibilities, only two scalar leptoquarks and the pseudoscalar of a peculiar two-Higgs-doublet model could be the responsibles for the muon anomalous magnetic moment discrepancy. Were this the case, this particles could be seen in the next LHC run. To this aim, especially to test the leptoquark hypothesis, we suggest to look for final states with tops and muons.

arXiv comment15 pages, uses axodraw

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• Muon $g-2$ and scalar leptoquark mixing
• Minimal Models for Dark Matter and the Muon g-2 Anomaly
• Massive vectors and loop observables: the $g-2$ case
• $\mu \to e\gamma$ selecting scalar leptoquark solutions for the $(g-2{)}_{e,\mu }$ puzzles
• A No-Lose Theorem for Discovering the New Physics of $(g-2{)}_{\mu }$ at Muon Colliders
• Implications of scalar and tensor explanations of $R_{D^{(\ast )}}$
• Connecting the Muon Anomalous Magnetic Moment and the Multi-lepton Anomalies at the LHC
• Effective comparison of neutrino-mass models
• The Muon Magnetic Moment and Physics Beyond the Standard Model
• Light Mediators in Anomaly Free $U(1{)}_X$ Models I - Theoretical Framework
• Muon ($g-2$) in $U(1{)}_{L_{\mu }-L_{\tau }}$ Scotogenic Model Extended with Vector like Fermion
• Leptomeson contribution to the muon g-2
• A forgotten fermion: the hypercharge -3/2 doublet, its phenomenology and connections to dark matter
• Novel Leptoquark Pair Production at LHC
• Constraining the new contributions to electron $g-2$ in a radiative neutrino mass model