Constraining short-range spin-dependent forces with polarized helium 3 at the Laue-Langevin Institute
Abstract: We have searched for a short-range spin-dependent interaction mediated by a hypothetical light scalar boson with CP-violating couplings to the neutron using the spin relaxation of hyperpolarized $3$He. The walls of the $3$He cell would generate a depolarizing pseudomagnetic field.
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