PHAS Colloquia

First Results from the Fermilab Muon g-2 Experiment

by Breese Quinn (University of Mississippi)

Tuesday, 14 September 2021 from to (America/Chicago)
Speaker: Dr. Breese Quinn (Physics & Astronomy, University of Mississippi)

Title: First Results from the Fermilab Muon g-2 Experiment

Abstract: Almost 20 years ago, an experiment at Brookhaven National Laboratory measured the muon anomalous magnetic moment aμ=(g-2)/2 to a precision of 540 ppb. That result disagrees with the Standard Model prediction by 3.7 standard deviations (σ) and represents one of the strongest hints we have had of new physics for the past two decades. To investigate this longstanding tension, the Muon g-2 experiment was built at Fermilab using the BNL storage ring along with new muon beam and detector systems to achieve the goal of measuring aμ to a precision of ~100 ppb. I will present the first results from the ongoing FNAL Muon g-2 experiment, based on 6% of the expected final dataset. These first results confirm the earlier BNL measurement, and combined push the g-2 discrepancy to 4.2 σ giving us the strongest evidence to date of new physics beyond the Standard Model.

About the speaker: I received my PhD from the University of Chicago and joined Fermilab as a Lederman Postdoctoral Fellow in 2000. I came to the University of Mississippi in 2004, where I am a Professor in the Department of Physics and Astronomy and serve as the Director of the UM Center for Multimessenger Astrophysics.  I have been a member of several Fermilab experiment collaborations including E-791, KTeV, DØ, and Muon g-2.  On Muon g-2, my group has filled leadership roles in beam dynamics and storage ring construction and operations, and I serve as the CPT/Lorentz Invariance Violation analysis group coordinator.


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Meeting ID: 995 291 7599
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