Makale detayı · 2004
Measurement of the Negative Muon Anomalous Magnetic Moment to 0 7 ppm
- Yıl
- 2004
- Tür
- article
Veri kaynağı ayrımı
- YÖKSİS YÖKSİS makale kaydı
- YÖKSİS dergi adı Physical Review Letters
- Katalog eşleşmesi (ISSN) Physical Review Letters
- OpenAlex OpenAlex zenginleştirmesi (özet, atıf, konular)
Özet
OpenAlex · İngilizce
We present the first results of the Fermilab National Accelerator Laboratory (FNAL) Muon g-2 Experiment for the positive muon magnetic anomaly a_{μ}≡(g_{μ}-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 ω_{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 ω[over ˜]_{p}^{'} in a spherical water sample at 34.7 °C. The ratio ω_{a}/ω[over ˜]_{p}^{'}, together with known fundamental constants, determines a_{μ}(FNAL)=116 592 040(54)×10^{-11} (0.46 ppm). The result is 3.3 standard deviations greater than the standard model prediction and is in excellent agreement with the previous Brookhaven National Laboratory (BNL) E821 measurement. After combination with previous measurements of both μ^{+} and μ^{-}, the new experimental average of a_{μ}(Exp)=116 592 061(41)×10^{-11} (0.35 ppm) increases the tension between experiment and theory to 4.2 standard deviations.
Konular
Atıflar
OpenAlex cited_by_count. WoS veya Scopus atıf sayısı değildir; o kaynaklar için ayrı kolon yoktur.
882 atıf
OpenAlex cited_by_count (önbellek / veritabanı)
Yerel katalogda bu makaleye atıf yapan 13 yayın (OpenAlex referans eşleşmesi; tam dünya listesi değildir).
- Final report of the E821 muon anomalous magnetic moment measurement at BNL 2006
- Improved limit on the muon electric dipole moment 2009
- Summary of the ATLAS experiment’s sensitivity to supersymmetry after LHC Run 1 — interpreted in the phenomenological MSSM 2015
- A storage ring experiment to detect a proton electric dipole moment 2016
- A storage ring experiment to detect a proton electric dipole moment 2016
- Search for Lorentz and CPT Violation Effects in Muon Spin Precession 2008
- Search for the anomalous electromagnetic moments of tau lepton through electron–photon scattering at CLIC 2017
- Search for the anomalous electromagnetic moments of tau lepton through electron–photon scattering at CLIC 2017
- Hybrid ring design in the storage-ring proton electric dipole moment experiment 2019
- Statistical equations and methods applied to the precision muon experiment at BNL 2007