Search for Lorentz and CPT Violation Effects in Muon Spin Precession
Abstract
The spin precession frequency of muons stored in the (g-2) storage ring has been analyzed for evidence of Lorentz and CPT violation. Two Lorentz and CPT violation signatures were searched for a nonzero Δωa(=ωaμ+-ωaμ-) and a sidereal variation of ωaμ±. No significant effect is found, and the following limits on the standard-model extension parameters are obtained: bZ=-(1.0±1.1)×10-23GeV; (mμdZ0+HXY)=(1.8±6.0)×10-23GeV; and the 95% confidence level limits bˇ⊥μ+<1.4×10-24GeV and bˇ⊥μ-<2.6×10-24GeV.
- Publication:
-
Physical Review Letters
- Pub Date:
- March 2008
- DOI:
- 10.1103/PhysRevLett.100.091602
- arXiv:
- arXiv:0709.4670
- Bibcode:
- 2008PhRvL.100i1602B
- Keywords:
-
- 11.30.Cp;
- 11.30.Er;
- 12.20.Fv;
- 13.40.Em;
- Lorentz and Poincare invariance;
- Charge conjugation parity time reversal and other discrete symmetries;
- Experimental tests;
- Electric and magnetic moments;
- High Energy Physics - Experiment;
- High Energy Physics - Phenomenology
- E-Print:
- 5 pages, 3 figures, submitted to Physical Review Letters, Modified to answer the referees suggestions