Constraints on the Exotic Spin-dependent Interactions from Magnetometers Data

The existence of exotic spin-dependent interactions is predicted by various new physics theories.These interactions generate macroscopic forces on polarized spins that can be detected with a magnetometer.The Sun and Moon could be considered mass sources capable of generating such interactions through axion, Z ′ boson, or unparticle exchange.New experimental upper limits on exotic spin-dependent interactions mediated by axions or Z ′ bosons at astronomical ranges are derived by analyzing magnetometer data measuring Lorentz and CPT violation.Additionally, the first upper limits on monopole-dipole spin-dependent interactions mediated by unparticles are obtained.

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