Analysis of Lost Muons in Fermilab's Muon g-2 Experiment

The Fermilab Muon g-2 experiment measures the anomalous magnetic moment of the muon to a precision of less than 200 parts per billion. The value is proportional to the difference between the muon's cyclotron frequency and the anomalous spin precession frequency in the presence of a uniform magnetic field, for muons contained within the g-2 storage ring. Spin precession frequency is extracted from the time distribution of the muon's decay positrons recorded by 24 electromagnetic calorimeters positioned around the inner circumference of the storage ring. Some of the events recorded are not decay positrons, but "lost" muons that have left the storage ring without decaying and deposited energy in the calorimeters. In this presentation, I present a brief overview of what a "lost muon" is and how the g-2 collaboration incorporates their effects into the analysis using blinded data from runs 4, 5, and 6.