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Search for Lorentz and CPT violation effects in Muon spin precession |
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| Authors: | Bennett G W Bousquet B Brown H N Bunce G Carey R M Cushman P Danby G T Debevec P T Deile M Deng H Deninger W Dhawan S K Druzhinin V P Duong L Efstathiadis E Farley F J M Fedotovich G V Giron S Gray F E Grigoriev D Grosse-Perdekamp M Grossmann A Hare M F Hertzog D W Huang X Hughes V W Iwasaki M Jungmann K Kawall D Kawamura M Khazin B I Kindem J Krienen F Kronkvist I Lam A Larsen R Lee Y Y Logashenko I McNabb R Meng W Mi J Miller J P Mizumachi Y Morse W M Nikas D Onderwater C J G Orlov Y Ozben C S Paley J M Peng Q Polly C C Pretz J Prigl R zu Putlitz G Qian T Redin S I Rind O Roberts B L |
| Affiliation: | Brookhaven National Laboratory, Upton, NY 11973, USA. |
| 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 delta omega a(=omega a mu+ - omega a mu-) and a sidereal variation of omega a mu+/-). No significant effect is found, and the following limits on the standard-model extension parameters are obtained: bZ = -(1.0+/-1.1) x 10(-23) GeV; (m mu dZ0 + HXY)=(1.8+/-6.0) x 10(-23) GeV; and the 95% confidence level limits b perpendicular mu+ <1.4 x 10(-24) GeV and b perpendicular mu- <2.6 x 10(-24) GeV. |
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