The anomalous magnetic moment of positive and negative muons |
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| Authors: | J Bailey K Borer F Combley H Drumm FJM Farley JH Field W Flegel PM Hattersley F Krienen F Lange E Picasso W Von Rüden |
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| Institution: | 1. Daresbury Laboratory, United Kingdom;2. Physikalisches Institut, Universität Bern, Switzerland;3. Dept. of Physics, University of Sheffield, United Kingdom;4. Institut für Physik der Universität Mainz, Germany;5. Royal Military College of Science, Shrivenham, United Kingdom;6. Dept. of Physics, University of Birmingham, United Kingdom |
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| Abstract: | The anomalous g-factor a ≡ (g?2)/2 has been measured for muons of both charges in the Muon Storage Ring at CERN. The two results, aμ+ = 1165910(12) × 10?9 and aμ? = 1165936(12) × 10?9, are in good agreement with each other, and combine to give a mean aμ = 1165922(9) × 10?9, which is very close to the most recent theoretical prediction 1165921(10) × 10?9. For the experimental results, the total statistical and systematic error is given. The measurements thus confirm the remarkable QED calculation plus hadronic contribution, and serve as a precise verification of the CPT theorem for muons. |
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| Keywords: | CERN Muon Storage Ring Collaboration |
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