Interplay of New Physics Effects in $(g-2{)}_{\ell }$ and $h\to {\ell }^{+}{\ell }^{-}$ -- Lessons from SMEFT

Abstract

We explore the interplay of New Physics (NP) effects in $(g-2{)}_{\ell }$ and $h\to {\ell }^{+}{\ell }^{-}$ within the Standard Model Effective Field Theory (SMEFT) framework, including one-loop Renormalization Group (RG) evolution of the Wilson coefficients as well as matching to the observables below the electroweak symmetry breaking scale. We include both the leading dimension six chirality flipping operators including a Higgs and $SU(2{)}_L$ gauge bosons as well as four-fermion scalar and tensor operators, forming a closed operator set under the SMEFT RG equations. We compare present and future experimental sensitivity to different representative benchmark scenarios. We also consider two simple UV completions, a Two Higgs Doublet Model and a single scalar LeptoQuark extension of the SM, and show how tree level matching to SMEFT followed by the one-loop RG evolution down to the electroweak scale can reproduce with high accuracy the $(g-2{)}_{\ell }$ and $h\to {\ell }^{+}{\ell }^{-}$ contributions obtained by the complete one- and even two-loop calculations in the full models.

24 pages, 9 figures; v2: corrected typos, added Rb result for electron anomalous moment

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Cited by in corpus (22)

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• $(\mathbf{g}-2{)}_{\mathbf{e},\mathbf{\mu }}$ in an extended inverse type-III seesaw
• Towards testing the magnetic moment of the tau at one part per million
• Muon and electron $g-2$ anomalies in a flavor conserving 2HDM with an oblique view on the CDF $M_W$ value
• Leptonic anomalous magnetic moments in $\nu$SMEFT
• Reflecting on chirality: CP-violating extensions of the single scalar-leptoquark solutions for the $(g-2{)}_{e,\mu }$ puzzles and their implications for lepton EDMs
• $(g-2{)}_{\mu }$ in the 2HDM and slightly beyond -- an updated view
• What is the scale of new physics behind the muon $g-2$?
• Neutrino masses and magnetic moments of electron and muon in the Zee Model
• Flavour alignment of New Physics in light of the $(g-2{)}_{\mu }$ anomaly
• Minimal model for the $W$-boson mass, $(g-2{)}_{\mu }$, $h\to {\mu }^{+}{\mu }^{-}$ and quark-mixing-matrix unitarity
• Leptoquarks and Real Singlets: A Richer Scalar Sector Behind the Origin of Dark Matter
• Impact of Lorentz violation on anomalous magnetic moments of charged leptons
• Predictions for Muon Electric and Magnetic Dipole Moments from $h\to {\mu }^{+}{\mu }^{-}$ in Two-Higgs-Doublet Models with New Leptons
• The Muon Magnetic Moment and Physics Beyond the Standard Model
• High-energy frontier of the muon g-2 at a muon collider
• Implications of the muon anomalous magnetic moment for the LHC and MUonE
• Generic tests of CP-violation in high-$p_{\text{T}}$ multi-lepton signals at the LHC and beyond
• The Influence of Lepton Portal on the WIMP-pFIMP framework
• HEFT approach to investigate the muon g-2 anomaly at a muon collider
• From Higgs physics to lepton flavour violation: current bounds and future prospects for vector-like lepton models