Search for Lorentz andCPTViolation Effects in Muon Spin Precession

2007/09/30 by 2 Collaboration, B. Bousquet, G. W. Bennett +74 · 2 citations
Mathematics · Physics and Astronomy · #Algorithm #Astrophysics #Black Holes and Theoretical Physics #Confidence interval #Lorentz transformation #Mathematical physics #Mathematics #Muon #Noncommutative and Quantum Gravity Theories #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum mechanics #Sidereal time #Statistics #hep-ex #hep-ph

paper · pdf · doi:10.1103/physrevlett.100.091602

published as Phys.Rev.Lett.100:091602, 2008 · 5 pages, 3 figures, submitted to Physical Review Letters, Modified to answer the referees suggestions

arxiv created 2008/01/17 · openalex publication_date 2008/03/04 · arxiv updated 2012/08/27 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

The spin precession frequency of muons stored in the (g\ensuremath-2) storage ring has been analyzed for evidence of Lorentz and CPT violation. Two Lorentz and CPT violation signatures were searched for a nonzero \ensuremathΔ\ensuremathω_a(=\ensuremathω_a^\ensuremathμ⁺\ensuremath-\ensuremathω_a^\ensuremathμ^\ensuremath-) and a sidereal variation of \ensuremathω_a^\ensuremathμ^\ifmmode±\else\textpm\fi. No significant effect is found, and the following limits on the standard-model extension parameters are obtained: b_Z=\ensuremath-(1.0\ifmmode±\else\textpm\fi1.1)\ifmmode×\else\texttimes\fi\phantom\rule0ex0ex10^\ensuremath-23 GeV; (m_\ensuremathμd_Z0+H_XY)=(1.8\ifmmode±\else\textpm\fi6.0)\ifmmode×\else\texttimes\fi10^\ensuremath-23 GeV; and the 95% confidence level limits \stackrel\textasciicaronb_\ensuremath⊥^\ensuremathμ⁺<\phantom\rule0ex0ex1.4\ifmmode×\else\texttimes\fi10^\ensuremath-24 GeV and \stackrel\textasciicaronb_\ensuremath⊥^\ensuremathμ^\ensuremath-<2.6\ifmmode×\else\texttimes\fi10^\ensuremath-24 GeV.

Citations

• Least-squares frequency analysis of unequally spaced data
• Studies in astronomical time series analysis. II - Statistical aspects of spectral analysis of unevenly spaced data
• Final report of the E821 muon anomalous magnetic moment measurement at BNL
• Measurement of the Negative Muon Anomalous Magnetic Moment to 0.7 ppm
• Lorentz-violating extension of the standard model
• CPTviolation and the standard model
• Spontaneous breaking of Lorentz symmetry in string theory
• CODATA recommended values of the fundamental physical constants: 2002

Cited by

• Test of Lorentz Invariance with Spin Precession of Ultracold Neutrons
• Direct limits on the interaction of antiprotons with axion-like dark matter