The Muon $$g$$-$$2$$ Experiment at Fermilab
- Kentucky U.
A new measurement of the anomalous magnetic moment of the muon, $$a_{\mu} \equiv (g-2)/2$$, will be performed at the Fermi National Accelerator Laboratory with data taking beginning in 2017. The most recent measurement, performed at Brookhaven National Laboratory (BNL) and completed in 2001, shows a 3.5 standard deviation discrepancy with the standard model value of $$a_\mu$$. The new measurement will accumulate 21 times the BNL statistics using upgraded magnet, detector, and storage ring systems, enabling a measurement of $$a_\mu$$ to 140 ppb, a factor of 4 improvement in the uncertainty the previous measurement. This improvement in precision, combined with recent improvements in our understanding of the QCD contributions to the muon $$g$$-$$2$$, could provide a discrepancy from the standard model greater than 7$$\sigma$$ if the central value is the same as that measured by the BNL experiment, which would be a clear indication of new physics.
- Research Organization:
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- DOE Contract Number:
- AC02-07CH11359
- OSTI ID:
- 1420910
- Report Number(s):
- FERMILAB-CONF-17-602-PPD; arXiv:1801.00084; 1645625
- Country of Publication:
- United States
- Language:
- English
Similar Records
Measurement of the muon anomalous precession frequency at the Muon g − 2 Experiment at Fermilab
MUON SPIN PRECESSION FREQUENCY EXTRACTION AND DECAY POSITRON TRACK FITTING IN RUN 1 OF THE FERMILAB MUON \MakeLowercase{$g-2$\xspace} EXPERIMENT