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Prospects for precise predictions of $a_\mu$ in the Standard Model
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abstract
We discuss the prospects for improving the precision on the hadronic corrections to the anomalous magnetic moment of the muon, and the plans of the Muon $g-2$ Theory Initiative to update the Standard Model prediction.
Forward citations
Cited by 17 Pith papers
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Precision evaluation of the $\eta$- and $\eta'$-pole contributions to hadronic light-by-light scattering in the anomalous magnetic moment of the muon
A new dispersive analysis of the eta and eta-prime transition form factors gives a_mu(eta-pole) = 14.7(9) x 10^-11 and a_mu(eta'-pole) = 13.5(7) x 10^-11, with combined pseudoscalar poles at 91.2(+2.9,-2.4) x 10^-11.
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Towards testing $(g-2)_\tau$ in $e^+e^-\to\tau^+\tau^-$: radiative corrections and projections for Belle II
A complete one-loop QED calculation for polarized e+e- to tau+tau- is implemented in the McMule Monte-Carlo code, showing that Belle II with a polarized beam could test the tau anomalous magnetic moment at the 10^-5 level.
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Timelike form factor for the anomalous process $\gamma^\ast \pi \rightarrow \pi \pi$
A Dyson-Schwinger/Bethe-Salpeter calculation predicts the timelike gamma* pi -> pi pi form factor and its Primakoff cross section, finding a strong energy rise and weak angular dependence.
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Complete dispersive evaluation of the hadronic light-by-light contribution to muon $g-2$
Using a dispersive formalism with experimental transition form factors and short-distance constraints, the authors obtain a_mu^HLbL = 101.9(7.9) x 10^-11, halving the previous uncertainty.
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Longitudinal short-distance constraints on hadronic light-by-light scattering and tensor meson contributions to the muon $g-2$
In hard-wall holographic QCD, the infinite tower of tensor mesons fills most of the missing symmetric longitudinal short-distance constraint and yields a total hadronic light-by-light contribution of about +11 x 10^-1...
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A compact frozen-spin trap for the search for the electric dipole moment of the muon
A compact frozen-spin muon trap design that projects a sensitivity of 4e-21 e·cm (Phase I) and 6e-23 e·cm (Phase II), improving the current muon EDM limit by up to three orders of magnitude.
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Probing new light scalars with the lepton anomalous magnetic moment and the weak equivalence principle violation
Combining electron and muon g-2 with the MICROSCOPE equivalence principle test bounds a light scalar's couplings at |λ_e| ≤ 6e-6, |λ_μ| ≤ 3.5e-4, and |λ_γ| ≤ 4.5e-13 eV^-1.
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Dispersive analysis of the pion vector form factor without zeros
Imposing the absence of complex zeros in the pion vector form factor reduces the dominant systematic uncertainty and makes the tensions between CMD-3 and other e+e- data sets appear sharper, including in the pion char...
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The LHC as a TeV Muon Beam Dump: Muonphilic Scalars at FASER
FASER and FASER2 could probe unconstrained muonphilic scalar masses below the dimuon threshold, including the (g-2)_mu favored region, using diphoton and muon-plus-diphoton signals.
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Hadronic vacuum polarization for the muon $g-2$ from lattice QCD: Long-distance and full light-quark connected contribution
The light-quark connected hadronic vacuum polarization contribution to muon g-2 is determined to 0.69% precision, 655.2(4.5) x 10^-10, from lattice QCD.
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Dispersion relation for hadronic light-by-light scattering: $\eta$ and $\eta'$ poles
A dispersive analysis of the eta and eta' transition form factors yields data-driven pole contributions to the muon g-2 of 14.7(9) x 10^-11 and 13.5(7) x 10^-11.
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Dispersion relation for hadronic light-by-light scattering: subleading contributions
A dispersive evaluation gives a_mu^HLbL subleading = 33.2(7.2) x 10^-11 and total = 101.9(7.9) x 10^-11.
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Superconnections in AdS/QCD and the hadronic light-by-light contribution to the muon $g-2$
A scalar-extended Chern-Simons superconnection in hard-wall AdS/QCD improves f1-f1' mixing and photon rates while leaving the combined axial-vector plus excited-pseudoscalar HLBL contribution to muon g-2 stable near 32e-11.
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Hadronic vacuum polarization for the muon $g-2$ from lattice QCD: Complete short and intermediate windows
The complete short- and intermediate-distance hadronic vacuum polarization contributions to the muon g-2 are computed on the lattice with 0.31% and 0.36% total errors.
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Constraints on the hadronic light-by-light tensor in corner kinematics for the muon $g-2$
In corner kinematics, the hadronic light-by-light tensor including gluonic corrections reduces at the studied order to a compact integrand depending only on axial-current form factors.
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The light-by-light contribution to the muon g-2 within the nonlocal chiral quark model with vector and axial-vector mesons
The nonlocal chiral quark model with vector and axial-vector mesons yields a hadronic light-by-light contribution to the muon g-2 of (157±10.6)x10^-11, with vector-meson photon dressing contributing only a few units.
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Run 2/3 measurement of the muon anomalous magnetic moment by the Muon g-2 experiment at Fermilab
The Fermilab Muon g-2 Run 2/3 measurement reaches 215 ppb precision and confirms the Brookhaven anomaly.
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