The Run 1 anomalous muon precession frequency analysis

  • April 30, 2021, 4:00 pm US/Central
  • Lawrence Gibbons, Cornell

The Muon g-2 collaboration at Fermilab has recently announced its first results for measurement of the muon magnetic anomaly aμ based on its 2018 Run-1 dataset. The measurement requires measurement of two frequencies, whose ratio forms the key input to the anomaly determination. The magnetic field strength measured in terms of the precession frequency of the proton, the denominator of the ratio, was discussed in an earlier seminar. This talk focuses on determination of the anomalous precession frequency of the muon in the experiment, the numerator. We will explore the eleven determinations of this frequency by six independent efforts, which have employed two positron reconstruction algorithms and four analysis approaches. The corrections to the measured muon precession frequency that arise from the properties and dynamics of the stored muon beam will also be described.