Final report of the E821 muon anomalous magnetic moment measurement at BNL
By M. Bennett, et al. 2006
1,507 citations recorded by the source corpus.
We present the final report from a series of precision measurements of the muon anomalous magnetic moment, a(mu)=(g-2)/2. The details of the experimental method, apparatus, data taking, and analysis are summarized. Data obtained at Brookhaven National Laboratory, using nearly equal samples of positive and negative muons, were used to deduce a(mu)(Expt)=11659208.0(5.4)(3.3)x10(-10), where the statistical and systematic uncertainties are given, respectively. The combined uncertainty of 0.54 ppm represents a 14-fold improvement compared to previous measurements at CERN. The standard model value for a(mu) includes contributions from virtual QED, weak, and hadronic processes. While the QED processes account for most of the anomaly, the largest theoretical uncertainty, approximate to 0.55 ppm, is associated with first-order hadronic vacuum polarization. Present standard model evaluations, based on e(+)e(-) hadronic cross sections, lie 2.2-2.7 standard deviations below the experimental result.
Subfields: Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/e90c5110dc79015e5556e0d5ff22a5781f72a48f
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In Nuclear and High Energy Physics
- Atlas Collaboration
- R. Essig
- P. Fierlinger
- J. Singh
- P. Schuster
- N. Toro
- Timothy E. Chupp
- G. Lanfranchi
Citations in the corpus
- Neutrino non-standard interactions: A status report (2019, background): “The discrepancy between the measurement [336] and theory prediction [337–341] of the muon (g − 2) can be explained through the exchange of the Z ′.”
- Electric dipole moments of atoms, molecules, nuclei, and particles (2017, methodology): “For example, the paramagnetic molecular ion HfF+ was stored with a rotating electric field (Cairncross et al., 2017), and the EDM of the muon was measured in conjunction with the g − 2, magnetic-moment anomaly measurements at Brookhaven (Bennett et al., 2006).”
- Search for New Physics with Atoms and Molecules (2017, background): “The colored area is limited by constraints on model parameters that would explain the discrepancy (Bennett et al., 2006) between the muon’s experimental anomalous magnetic moment and the SM prediction.”