Implications of the muon anomalous magnetic moment for the LHC and MUonE

Abstract

We consider the anomalous magnetic moment of the muon $a_{\mu }$, which shows a significant deviation from the Standard Model expectation given the recent measurements at Fermilab and BNL. We focus on Standard Model Effective Field Theory (SMEFT) with the aim to identify avenues for the upcoming LHC runs and future experiments such as MUonE. To this end, we include radiative effects to $a_{\mu }$ in SMEFT to connect the muon anomaly to potentially interesting searches at the LHC, specifically Higgs decays into muon pairs and such decays with resolved photons. Our investigation shows that similar to results for concrete UV extensions of the Standard Model, the Fermilab/BNL result can indicate strong coupling within the EFT framework and $a_{\mu }$ is increasingly sensitive to a single operator direction for high scale UV completions. In such cases, there is some complementarity between expected future experimental improvements, yet with considerable statistical challenges to match the precision provided by the recent $a_{\mu }$ measurement.

11 pages, 9 figures; v2 accepted by PRD

References in corpus (40)

• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• Measurement of the Positive Muon Anomalous Magnetic Moment to 0.46 ppm
• The anomalous magnetic moment of the muon in the Standard Model
• FeynRules - Feynman rules made easy
• Leading hadronic contribution to the muon magnetic moment from lattice QCD
• The $g-2$ of charged leptons, $\alpha (M_Z^2)$ and the hyperfine splitting of muonium
• Hadronic contribution to the muon anomalous magnetic moment to next-to-next-to-leading order
• The hadronic light-by-light scattering contribution to the muon anomalous magnetic moment from lattice QCD
• Longitudinal short-distance constraints for the hadronic light-by-light contribution to $(g-2{)}_{\mu }$ with large-$N_c$ Regge models
• Top, Higgs, Diboson and Electroweak Fit to the Standard Model Effective Field Theory
• New physics explanations of $a_{\mu }$ in light of the FNAL muon $g-2$ measurement
• Electroweak Radiative Corrections for Collider Physics
• Consistency of hadronic vacuum polarization between lattice QCD and the R-ratio
• SMEFTsim 3.0 -- a practical guide
• Matching scalar leptoquarks to the SMEFT at one loop
• $(g-2{)}_{\mu }$, Lepton Flavour Violation and $Z$ Decays with Leptoquarks: Correlations and Future Prospects
• Effective Theories and Measurements at Colliders
• Consequences of chirally enhanced explanations of $(g-2{)}_{\mu }$ for $h\to \mu \mu$ and $Z\to \mu \mu$
• Effective field theory interpretation of lepton magnetic and electric dipole moments
• Electroweak and QCD Corrections to $Z$ and $W$ pole observables in the SMEFT
• Correlating $h\to {\mu }^{+}{\mu }^{-}$ to the Anomalous Magnetic Moment of the Muon via Leptoquarks
• The new "MUON G-2" Result and Supersymmetry
• Anomalous muon magnetic moment, supersymmetry, naturalness, LHC search limits and the landscape
• Improved $(g-2{)}_{\mu }$ Measurements and Supersymmetry
• Integrating out heavy fields in the path integral using the background-field method: general formalism
• MUonE sensitivity to new physics explanations of the muon anomalous magnetic moment
• Radiative neutrino masses, lepton flavor mixing and muon $g-2$ in a leptoquark model
• Improved $(g-2{)}_{\mu }$ Measurements and Wino/Higgsino Dark Matter
• Bhabha scattering at NNLO with next-to-soft stabilisation
• Type-X two Higgs doublet model in light of the muon $\mathbf{g}-2$: confronting Higgs and collider data
• Interplay of New Physics Effects in $(g-2{)}_{\ell }$ and $h\to {\ell }^{+}{\ell }^{-}$ -- Lessons from SMEFT
• Electron and muon magnetic moments and implications for dark matter and model characterisation in non-universal $U(1{)}^{\prime }$ supersymmetric models
• Leptonic anomalous magnetic moments in $\nu$SMEFT
• Towards muon-electron scattering at NNLO
• NNLO virtual and real leptonic corrections to muon-electron scattering
• Explaining $(g-2{)}_{\mu }$ with Multi-TeV Sleptons
• What is the scale of new physics behind the muon $g-2$?
• Higgs decay to fermion pairs at NLO in SMEFT
• Flipped $g_{\mu }-2$
• Vacuum expectation value renormalization in the Standard Model and beyond

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