University of Illinois Urbana-Champaign

Measuring the anomalous precession frequency of the muon in run 2 of the Fermilab muon g-2 experiment

Schlesier, Cristina

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https://hdl.handle.net/2142/113957

Description

Title
Measuring the anomalous precession frequency of the muon in run 2 of the Fermilab muon g-2 experiment
Author(s)
Schlesier, Cristina
Issue Date
2021-11-01
Director of Research (if dissertation) or Advisor (if thesis)
Pitts, Kevin
Doctoral Committee Chair(s)
Hooberman, Ben
Committee Member(s)
  • El-Khadra, Aida X
  • Grosse-Perdekamp, Matthias
Department of Study
Physics
Discipline
Physics
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Date of Ingest
2022-04-29T21:42:55Z
Keyword(s)
Physics
Language
eng
Abstract
The E989 Muon g −2 Experiment at Fermilab aims to measure the anomalous magnetic moment of the muon, aμ, to an unprecedented precision of 140 parts per billion (ppb). Currently, a 4.2σ discrepancy exists between the experimental value of aμ and the theoretical value given by the Standard Model. The goal of E989 is to either confirm this discrepancy and suggest new physics, or show the discrepancy to be an error. The first result from E989 has been published [1], using data collected during Run 1, which confirms the tension between theory and experiment. A total of 5 runs are planned, increasing the amount of data by roughly a factor of 10. This thesis outlines the history, motivations, and physics of the E989 experiment, and presents a preliminary analysis of data collected during Run 2. Determining aμ requires a precision measurement of two main quantities: (1) the anomalous precession frequency of muons in a magnetic storage ring and (2) the magnetic field experienced by those muons. The anomalous precession frequency, ωa must be measured with a systematic uncertainty below 70ppb in order for the collaboration to achieve its target precision. The analysis presented here concerns ωa.
Graduation Semester
2021-12
Type of Resource
Thesis
Permalink
http://hdl.handle.net/2142/113957
Copyright and License Information
Copyright 2021 Cristina Schlesier

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