Physical Review Letters· 2021Q1
Measurement of the Positive Muon Anomalous Magnetic Moment to 0.46 ppm
- 1,333citations
- Q1SCImago
- 2021year
Short summary
The Fermilab Muon g-2 Experiment reports the first measurement of the positive muon anomalous magnetic moment (aμ) to 0.46 ppm, a key parameter in the Standard Model of particle physics.
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Key points
- First results from the Fermilab Muon g-2 Experiment for the positive muon anomalous magnetic moment (aμ).
- Achieved a precision of 0.46 ppm.
- Measurement derived from the intensity variation of positrons from muon decays, encoding the spin-precession and cyclotron frequency difference.
- Magnetic field measured using nuclear magnetic resonance probes calibrated to the proton spin precession frequency.
AI-generated from the title and abstract; the full text is not read.
Abstract
We present the first results of the Fermilab National Accelerator Laboratory (FNAL) Muon g -2 Experiment for the positive muon magnetic anomaly a g -2=2. The anomaly is determined from the precision measurements of two angular frequencies. Intensity variation of high-energy positrons from muon decays directly encodes the difference frequency a between the spin-precession and cyclotron frequencies for polarized muons in a magnetic storage ring. The storage ring magnetic field is measured using nuclear magnetic resonance probes calibrated in terms of the equivalent proton spin precession frequency 0
The authors' abstract, as published at the source. Physical Review Letters, 2021 · DOI ↗
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Field: Nuclear and High Energy Physics
Nuclear and High Energy PhysicsPhysics and Astronomy