A long-standing discrepancy exists between the Standard Model (SM) prediction for the muon anomalous magnetic moment (g-2) and the value measured by the Brookhaven E821 Experiment. At present the discrepancy stands at about three standard deviations, with comparable accuracy in experimental and expected values. Higher experimental precision might increase the discrepancy to a level that indicates possible non-SM contribution. I will discuss the E989 experiment, which is taking data at the Fermi National Accelerator Laboratory with the goal of 0.01 ppm in both the statistical and systematic uncertainty. This impressive level of accuracy is possible thanks to the major improvements on the experimental setup with respect of the E821 experiment. In particular I will focus on the high-precision calibration system developed to ensure a systematic uncertainty on the gain fluctuations of the detector below 0.04 ppm.
Speaker: Dr. Antonio Anastasi
Friday, April 19, 11am – Aula Riunioni INFN, Area di Ricerca