A measurement of the mean life of the positive muon to a precision of 11 parts per million
Chitwood, Daniel Brian
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https://hdl.handle.net/2142/32108
Description
Title
A measurement of the mean life of the positive muon to a precision of 11 parts per million
Author(s)
Chitwood, Daniel Brian
Issue Date
2007-10
Director of Research (if dissertation) or Advisor (if thesis)
Hertzog, David W.
Department of Study
Physics
Discipline
Physics
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Physics, Nuclear
Physics, Elementary Particles and High Energy
particle physics
muon lifetime
muon mean life
Language
en
Abstract
The mean life of the positive muon has been measured to a precision of 11 ppm using a low-energy, pulsed muon beam stopped in a ferromagnetic target, which was surrounded by a scintillator detector array. The result, τμ = 2.197 013 (24) μs, is in excellent agreement with the previous world average. The new world average τμ = 2.197019(21) μs determines the Fermi constant GF = 1.166371(6) × 10^-5 GeV^-2 (5 ppm). Described in this thesis are the motivating concepts, experimental procedure, data analysis, and systematic error analysis for this measurement.
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