Bound on Lorentz- and CPT-Violating Boost Effects for the Neutron

Details Bound on Lorentz- and CPT-Violating Boost Effects for the Neutron Bound on Lorentz- and CPT-Violating Boost Effects for the Neutron

2003-09-15

arxiv.org/abs/physics/0309070v2

Phys.Rev.Lett.93:230801,2004

Physics

Atomic Physics

4 pages, 1 figure

Scientific paper

10.1103/PhysRevLett.93.230801

A search for an annual variation of a daily sidereal modulation of the frequency difference between co-located ${}^{129}$Xe and ${}^{3}$He Zeeman masers sets a stringent limit on boost-dependent Lorentz and CPT violation involving the neutron, consistent with no effect at the level of 150 nHz. In the framework of the general Standard-Model Extension, the present result provides the first clean test for the fermion sector of the symmetry of spacetime under boost transformations at a level of $10^{-27}$ GeV.

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