Final report on the CERN muon storage ring including the anomalous magnetic moment and the electric dipole moment of the muon, and a direct test of relativistic time dilation

A comprehensive description of the muon storage ring and its operation is given, and the final results of the experiment are presented and discussed. The anomalous magnetic moments of positive and negative muons are found to be aμ+ = 1165911(11) × 10−9 and aμ− = 1165937(12) × 10−9 giving an average value for muons of aμ = 1165924(8.5) × 10−9. The electric dipole moments were also measured with the results Dμ+= (8.6 ± 4.5) × 10−9e · cm and Dμ− = (0.8 ± 4.3) × 10−19e · cm. Under the assumption of the CPT theorem these yield a weighted average of Dμ = (3.7 ± 3.4) × 10−19e · cm. Finally the time transformation of special relativity is shown to be valid to (0.8 ± 0.7) × 10−3 at γ ≅ 29.3. All the errors quoted here are one standard deviation and contain both statistical and systematic effects.

[1]  Theodor W. Hänsch,et al.  Precision Measurement of the Rydberg Constant by Laser Saturation Spectroscopy of the Balmer α Line in Hydrogen and Deuterium , 1974 .

[2]  J. Augustin,et al.  Evidence for the phi-meson contribution to vacuum polarization obtained with the Orsay e$sup +$e$sup -$ colliding-beam ring , 1973 .

[3]  Andreas Petermann Fourth order magnetic moment of the electron , 1957 .

[4]  D. Bessis,et al.  Cargèse lectures in physics , 1967 .

[5]  G. E. Fischer,et al.  Measurement of e+ e- ---> e+ e- and e+ e- ---> mu+ mu- at SPEAR , 1975 .

[6]  P. Schwinberg,et al.  Precise measurements of axial, magnetron, cyclotron, and spin-cyclotron-beat frequencies on an isolated 1-meV electron , 1977 .

[7]  P. Schwinberg,et al.  Electron Magnetic Moment from Geonium Spectra , 1978 .

[8]  J. Calmet,et al.  The anomalous magnetic moment of the muon: A review of the theoretical contributions , 1977 .

[9]  R. Brown,et al.  The anomalous magnetic moment of the negative muon , 1966 .

[10]  M. Samuel,et al.  Photon-photon scattering contribution to the anomalous magnetic moment of the muon , 1976 .

[11]  G. Petrucci,et al.  The storage ring magnet of the third muon ( g-2) experiment at CERN , 1979 .

[12]  J. S. Whitaker,et al.  Evidence for Anomalous Lepton Production in e+ - e- Annihilation , 1975 .

[13]  E. Lindahl,et al.  Upper Limit on Parity-Nonconserving Optical Rotation in Atomic Bismuth , 1977 .

[14]  G. W. Ford,et al.  Electron Spin Motion in a Magnetic Mirror Trap , 1972 .

[15]  S. Brodsky,et al.  PHOTON--PHOTON SCATTERING CONTRIBUTION TO THE SIXTH-ORDER MAGNETIC MOMENT OF THE MUON. , 1969 .

[16]  R. Blin-stoyle Elementary Particle Physics , 1965, Nature.

[17]  J. Wesley,et al.  The current status of the lepton g factors , 1972 .

[18]  N. Kroll Ad hoc modifications of quantum electrodynamics , 1966 .

[19]  K. Borer,et al.  Measurements of relativistic time dilatation for positive and negative muons in a circular orbit , 1977, Nature.

[20]  Steven Weinberg,et al.  A Model of Leptons , 1967 .

[21]  T. W. Crane,et al.  New Precise Value for the Muon Magnetic Moment and Sensitive Test of the Theory of the hfs Interval in Muonium , 1977 .