New Measurement of the Electron Magnetic Moment and the Fine Structure Constant

Abstract

A measurement using a one-electron quantum cyclotron gives the electron magnetic moment in Bohr magnetons, g/2 = 1.001 159 652 180 73 (28) [0.28 ppt], with an uncertainty 2.7 and 15 times smaller than for previous measurements in 2006 and 1987. The electron is used as a magnetometer to allow lineshape statistics to accumulate, and its spontaneous emission rate determines the correction for its interaction with a cylindrical trap cavity. The new measurement and QED theory determine the fine structure constant, with alpha^{-1} = 137.035 999 084 (51) [0.37 ppb], and an uncertainty 20 times smaller than for any independent determination of alpha.

4 pages, 4 figures

References in corpus (3)

• Final Report of the Muon E821 Anomalous Magnetic Moment Measurement at BNL
• Revised value of the eighth-order electron g-2
• A new test of the light dark matter hypothesis

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• A single-photon large-momentum-transfer atom interferometry scheme for Sr or Yb atoms with application to determining the fine-structure constant
• TAU2012 Summary
• Electric dipole moments of charged leptons at one loop in the presence of massive neutrinos
• Noncommutative magnetic moment, fundamental length and lepton size
• Minimal Zee model for lepton $g-2$ and $W$-mass shifts
• Flavor-changing light bosons with accidental longevity
• Post-Newtonian effects of Dirac particle in curved spacetime - III : the muon g-2 in the Earth's gravity
• Foldy-Wouthuysen Transformation in Strong Magnetic Fields and Relativistic Corrections for Quantum Cyclotron Energy Levels
• Benchmark 3-Flavor Pattern and Small Universal Flavor-Electroweak Parameter
• Reverse Engineering Approach to Quantum Electrodynamics
• Light polarization oscillations induced by photon-photon scattering
• The general relativistic effects to the magnetic moment in the Earth's gravity
• Complex-mass shell renormalization of the higher-derivative electrodynamics
• Post-Newtonian effects of Dirac particle in curved spacetime - II : the electron g-2 in the Earth's gravity
• Metric Relativity and the Dynamical Bridge: highlights of Riemannian geometry in physics
• Constraints on exotic lepton doublets with minimal coupling to the standard model
• Quantum Electrodynamic Corrections to Cyclotron States in a Penning Trap
• Quantum Theory without Planck's Constant
• The Semiclassical Einstein Equation on Cosmological Spacetimes
• Lorentz violation in nucleon electromagnetic moments
• Relativistic shifts of eigenfrequencies in an ideal Penning trap
• Collective behavior of light in vacuum
• The PVLAS experiment: a 25 year effort to measure vacuum magnetic birefringence
• Kapitza-Dirac blockade: A universal tool for the deterministic preparation of non-Gaussian oscillator states
• Probing Magnetic Moment Operators in $H\gamma$ Production and $H\to {\tau }^{+}{\tau }^{-}\gamma$ Rare Decay
• Explaining the Muon g-2 Anomaly in Deflected AMSB for NMSSM
• Anomalous anomalies from virtual black holes
• How Dirac's Seminal Contributions Pave the Way for Comprehending Nature's Deeper Designs
• Positronium contribution to the electron g-2
• Effects of universal extra dimensions on top-quark electromagnetic interactions
• Standard Model Predictions for the Muon $(g-2)/2$
• Update of the Electron and Muon g-Factors
• Probing an intrinsically flavorful ALP via tau-lepton flavor physics
• Sensitivity to new physics: a_e vs. a_mu
• Electron's anomalous magnetic moment effects on electron-hydrogen elastic collisions in the presence of a circularly polarized laser field
• Relativistic Ritz approach to hydrogen-like atoms I: theoretical considerations
• Emergent Quantum Mechanics at the Boundary of a Local Classical Lattice Model
• Switchable Magnetic Bottles and Field Gradients for Particle Traps
• Switchable Damping for a One-Particle Oscillator
• Flavoured $(g-2{)}_{\mu }$ with Dark Lepton Seasoning
• TASI 2020 Lectures on Precision Tests of the Standard Model
• A Rigorous Derivation of the Functional Renormalisation Group Equation
• Monopoles, Exotic states and Muon $g-2$ in TeV scale Trinification
• Corrections to the Gyromagnetic Factor in Very Special Relativity
• Modeling atom interferometry experiments with Bose-Einstein condensates in power-law potentials
• The muon g-2: retrospective and future
• Perturbation Theory Without Diagrams: The Polaron Case
• One-loop $\beta$ function of noncommutative scalar $QE{D}_4$
• Semi-visible dark photon in a model with vector-like leptons for the $(g-2{)}_{e,\mu }$ and $W$-boson mass anomalies
• Momentum entanglement in relativistic quantum mechanics
• Defect Theory of Positronium and Nontrivial QED Relations
• Gravitational effects on geonium and free electron ${\mathrm{g}}_s$-factor measurements in a Penning trap
• Same-Sign Taus Signatures of Maximally Flavor-Violating Scalars at the LHC
• Functional Epistemology "Nullifies" Dyson's Rebuttal of Perturbation Theory
• $W$ boson mass shift, dark matter and $(g-2{)}_{\ell }$ in a scotogenic-Zee model
• Top-Quark Mass Data and the Sum of Quasi-Degenerate Neutrino Masses (One small electroweak-bound e-parameter organizes elementary particle 3-flavor phenomenology)
• Multi-component states for trapped spin-1 Bose-Einstein Condensates in the presence of magnetic field
• Reappraisal of the minimal flavoured $Z^{\prime }$ scenario
• Lepton $g-2$ and $W$-boson mass anomalies in the DFSZ axion model
• A new method that automatically regularizes scattering amplitudes
• Muon anomalous magnetic moment in a $SU(4)\otimes U(1{)}_N$ model without exotic electric charges
• Quantum correlations cannot be reproduced with a finite number of measurements in any no-signaling theory
• Search for sub-GeV Scalars in $e^{+}{e}^{-}$ collisions
• Quantum Logic Spectroscopy of an Electron and Positron for Precise Tests of the Standard Model
• Search for cascade decays of charged sleptons and sneutrinos in final states with three leptons and missing transverse momentum in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Lepton flavor violation by three units
• Strong coherent ion-electron coupling using a wire data bus
• Survey for Distant Solar Twins (SDST) -- II. Design, observations and data
• Is the Quantum State Real in the Hilbert Space Formulation?
• Precision Predictions
• Magnetic moment of the positronium ion and virial relations
• Particle Physics in the LHC Era and beyond
• Preliminary Results from Recent Measurements of the Antiprotonic Helium Hyperfine Structure
• On systematic and GR effects on muon $g-2$ experiments
• Muon $g-2$ Anomaly from a Massive Spin-2 Particle
• The fine structure constant: a review of measurement results and possible space-time variations
• Highly Charged Ions in Rare Earth Permanent Magnet Penning Traps
• Muon $g-2$, dark matter, and neutrino mass explanations in a modular $A_4$ symmetry
• Stochastic dynamics of an electron in a Penning trap: phase flips correlated with amplitude collapses and revivals
• Relativistic Quantum-Speed Limit for Gaussian Systems and Prospective Experimental Verification
• Searching for physics beyond the Standard Model through the dipole interaction
• A pedagogical review on muon $g-2$
• Electroweak Precision Constraints on Dark Photon Models with Generalized Mixing
• Pauli-type coupling between spinors and curved spacetime
• Constraining EDM and MDM lepton dimension five interactions in the electroweak sector
• Radiative Energy and Mass Shifts of Quantum Cyclotron States
• Unexpected consequences of Post-Quantum theories in the graph-theoretical approach to correlations
• Almost relevant corrections for direct measurements of electron's g-factor
• The Muon Experimental Anomalies Are Explained by a New Interaction Proportional to Charge
• Magnetic Field Measurement and Analysis for the Muon g-2 Experiment
• Experiences from the Commissioning and First Physics Run of the Fermilab Muon g-2 Experiment
• Scheme for continuous force detection with a single electron at the level of $10^{-27}\mathrm{N}$
• Towards an Improved Test of the Standard Model's Most Precise Prediction
• Hadronic and radiative decays of the tau lepton
• $(g-2{)}_{e,\mu }$ and decays $e_b\to e_a\gamma$ in a $ \mbox{SU}(4)_L \otimes \mbox{U}(1)_X$ model with inverse seesaw neutrinos
• Semi-Visible Dark Photon Phenomenology at the GeV Scale
• Magnetic moment of a bound electron
• Ultraviolet-Infrared Bounds and Minimum Coupling in Effective Field Theories
• Charged-Lepton Flavour Physics
• Scientific Opportunities at the ARIEL Electron Linac
• Quantum GraviElectro Dynamics
• Evidence of Two-Source King Plot Nonlinearity in Spectroscopic Search for New Boson
• Fractionary Charged Particles Confronting Lepton Flavor Violation and the Muon's Anomalous Magnetic Moment
• Gyromagnetic ratio and Pauli form factor in anisotropic QED${}_{2+1}$ at one-loop
• Effective Fermion Mass in Relativistic and Non-Relativistic Systems
• Dynamical Confinement and Magnetic Traps for Charges and Spins
• On macroscopic residual QCD force of electrodynamics
• Can electron and muon $g-2$ anomalies be jointly explained in SUSY?
• Flavor specific chiral $U(1{)}_X$ framework for explaining the ATOMKI anomaly
• Leptonic $g-2$ anomaly in an extended Higgs sector with vector-like leptons
• Searching for the Feynman diagram IIc
• Penning-Trap Searches for Lorentz and CPT Violation
• Thermal Leptophilic Light Vector Dark Matter with Spinor Mediator and Muon (g-2) Anomaly
• On the value of the non-perturbative field renormalization constant Z in gauge theories
• A Digital Feedback System for Advanced Ion Manipulation Techniques in Penning Traps
• Something is wrong in the state of QED
• LUXE: A new experiment to study non-perturbative QED in electron-laser and photon-laser collisions
• New Physics Hints from Flavour
• LFV decays in a 3-4-1 model with minimal inverse seesaw neutrinos
• From Higgs physics to lepton flavour violation: current bounds and future prospects for vector-like lepton models
• Constraining the new contributions to electron $g-2$ in a radiative neutrino mass model
• Vector unparticle contributions to lepton g-2
• Constraining the deformed dispersion relation with the hydrogen atom 1S-2S transition
• Quantum fields in the non-perturbative regime - Yang-Mills theory and gravity
• The Electroweak Symmetry Breaking Riddle
• The Unpublished Feynman Diagram IIc