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Preliminary searches for spin-dependent interactions using sidebands of nuclear spin-precession signals

https://doi.org/10.1063/5.0174672

Shortino, J; Knappe-Grueneberg, S; Voigt, J; Chu, P-H; Reid, A; Snow, W M; Kilian, W (January 2024, Review of Scientific Instruments)

Various theories beyond the Standard Model predict new particles with masses in the sub-eV range with very weak couplings to ordinary matter. A new P-odd and T-odd interaction between polarized and unpolarized nucleons proportional to s⃗⋅r̂ is one such possibility, where r⃗=rr̂ is the spatial vector connecting the nucleons, and s⃗ is the spin of the polarized nucleon. Such an interaction involving a scalar coupling gsN at one vertex and a pseudoscalar coupling gpn at the polarized nucleon vertex can be induced by the exchange of spin-0 pseudoscalar bosons. We describe a new technique to search for interactions of this form and present the first measurements of this type. We show that future improvements to this technique can improve the laboratory upper bound on the product gsNgpn by two orders of magnitude for interaction ranges at the 100 micron scale.
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Characterization of magnetic field noise in the ARIADNE source mass rotor

https://doi.org/10.1103/PhysRevResearch.4.013090

Aggarwal, Nancy; Schnabel, A.; Voigt, J.; Brown, Alex; Long, J. C.; Knappe-Grueneberg, S.; Kilian, W.; Fang, A.; Geraci, A. A.; Kapitulnik, A.; et al (February 2022, Physical Review Research)

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New Limit on the Permanent Electric Dipole Moment of ${}^{129}{Xe}$ Using ${}^{3}{He}$ Comagnetometry and SQUID Detection

https://doi.org/10.1103/PhysRevLett.123.143003

Sachdeva, N.; Fan, I.; Babcock, E.; Burghoff, M.; Chupp, T. E.; Degenkolb, S.; Fierlinger, P.; Haude, S.; Kraegeloh, E.; Kilian, W.; et al (October 2019, Physical Review Letters)

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