1. Search for exotic spin-dependent couplings of the neutron with matter using spin-echo based neutron interferometry.
- Author
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Parnell, S. R., van Well, A. A., Plomp, J., Dalgliesh, R. M., Steinke, N.-J., Cooper, J. F. K., Geerits, N., Steffen, K. E., Snow, W. M., and de Haan, V. O.
- Subjects
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NEUTRONS , *INTERFEROMETRY , *NEUTRON spectrometers , *MATTER , *BOSONS - Abstract
Various theories beyond the Standard Model predict new particles with masses in the sub-eV range with very weak couplings to ordinary matter which can possess spin-dependent couplings to electrons and nucleons. We report null results of a search for possible exotic spin-dependent couplings of the neutron which could be induced by the exchange of light weakly coupled bosons or spin-gravity coupling conducted using a spin-echo neutron spectrometer. We constrain the products g²A and g A g V of the axial vector coupling of the neutron to the matter of the Earth through the exchange of a weakly coupled vector boson for force ranges between the metre scale and the radius of the Earth. We also constrain the constants in some theories of exotic spin-gravity couplings. [ABSTRACT FROM AUTHOR]
- Published
- 2020
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