1–6 Sept 2025
Liverpool, UK
Europe/London timezone

Precision Measurement of the Muon Anomalous Precession Frequency Using Run‑4/5/6 Data of the Muon g-2 Experiment at Fermilab

2 Sept 2025, 14:10
25m
Space 7 (The Spine, Liverpool)

Space 7

The Spine, Liverpool

Presentation WG4 - Muon Physics WG4

Speaker

Zejia Lu

Description

The Muon g-2 Experiment at Fermilab has achieved a significant milestone by measuring the muon anomalous magnetic moment with a precision of 127 parts per billion (ppb), surpassing its original design goal of 140 ppb. This presentation provides an overview of the analysis of the anomalous precession frequency using the Run-4/5/6 dataset, which is crucial for the Muon g-2 measurement. We will discuss the analysis workflow and the determination of systematic uncertainties that contributed to this achievement. Special attention will be given to the modeling of coherent betatron oscillations (CBO) in the presence of the newly introduced radiofrequency (RF) field, as well as the identification and correction of residual slow effects observed in the time spectrum. These advancements are of vital importance for enhancing the accuracy of anomalous frequency measurement.

Author

Presentation materials