A new approach for measuring the muon anomalous magnetic moment and electric dipole moment
By M. Abe, S. Bae, G. Beer, G. Bunce, H. Choi, Seonho Choi, M. Chung, W. Silva, S. Eidelman, M. Finger and 85 more. Progress of Theoretical and Experimental Physics, 2019
250 citations recorded by the source corpus.
This paper introduces a new approach to measure the muon magnetic moment anomaly |$a_{\mu} = (g-2)/2$| and the muon electric dipole moment (EDM) |$d_{\mu}$| at the J-PARC muon facility. The goal of our experiment is to measure |$a_{\mu}$| and |$d_{\mu}$| using an independent method with a factor of 10 lower muon momentum, and a factor of 20 smaller diameter storage-ring solenoid compared with previous and ongoing muon |$g-2$| experiments with unprecedented quality of the storage magnetic field. Additional significant differences from the present experimental method include a factor of 1000 smaller transverse emittance of the muon beam (reaccelerated thermal muon beam), its efficient vertical injection into the solenoid, and tracking each decay positron from muon decay to obtain its momentum vector. The precision goal for |$a_{\mu}$| is a statistical uncertainty of 450 parts per billion (ppb), similar to the present experimental uncertainty, and a systematic uncertainty less than 70 ppb. The goal for EDM is a sensitivity of |$1.5\times 10^{-21}~e\cdot\mbox{cm}$|.
Subfields: Mechanics of Materials, Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/abddbb61c491bf0ec31501614ca08ea6a6fdc72b
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In Nuclear and High Energy Physics
Citations in the corpus
- Lattice calculation of the short and intermediate time-distance hadronic vacuum polarization contributions to the muon magnetic moment using twisted-mass fermions (2022, result): “The ongoing data analysis of the second and third runs at Fermilab, will allow to further reduce the uncertainty on the experimental value by a factor of four, and a forthcoming experiment at J-PARC (E34) [10] is expected to reach a similar precision.”
- Short-distance constraints for the HLbL contribution to the muon anomalous magnetic moment (2019, unknown): “is expected to be significantly improved [3, 4].”
- Three-pion contribution to hadronic vacuum polarization (2019, background): “To confront the SM with upcoming experiments at Fermilab [9] and J-PARC [10], one needs to be able to control the theoretical uncertainties at a commensurate level.”