Colloquia

The new muon g-2 results from Fermilab: Physics and High Precision implications

by Prof. Yannis Semertzidis (KAIST, Daejeon, South Korea)

Europe/Athens
Description

The muon g-2 experiment at Brookhaven National Lab, reported on data collected in 1997-2001, and showed a significant discrepancy from the SM prediction, implying some form of new physics. The muon g-2 ring magnet and some parts of the experiment were moved to FNAL with the aim to improve both the statistics and systematic errors with a final target of about a factor of 4 improvement in the total experimental error. At present, we have analyzed and reported on a small fraction of the data collected so far, with a total error similar to the final BNL result. The new value is found to be consistent with the BNL result, and the combined experimental value is found to be 4.2 sigma away from the prediction due to SM contributions. A recent lattice estimation claims a theoretical prediction consistent with the experimental value, but more work is needed to clarify the situation in theory. I will go over the experimental systematic errors and why we are confident with the results.

 

Videoconference via https://us02web.zoom.us/j/86424456209