A proposed search for new light bosons using a table-top neutron Ramsey apparatus
Abstract
If a new light boson existed, it would mediate a new force between ordinary fermions, like neutrons. In general such a new force is described by the Compton wavelength λc of the associated boson and a set of dimensionless coupling constants. For light boson masses of about 10-4 eV, λc is of the order millimeters. Here, we propose a table-top particle physics experiment which provides the possibility to set limits on the strength of the coupling constants of light bosons with spin-velocity coupling. It utilises Ramsey's technique of separated oscillating fields to measure the pseudo-magnetic effect on neutron spins passing by a massive sample.
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