Experimental limit on an exotic parity-odd spin- and velocity-dependent interaction using an optically polarized vapor

Young Jin Kim (), Ping-Han Chu (), Igor Savukov and Shaun Newman
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Young Jin Kim: P-21, Los Alamos National Laboratory
Ping-Han Chu: P-21, Los Alamos National Laboratory
Igor Savukov: P-21, Los Alamos National Laboratory
Shaun Newman: P-21, Los Alamos National Laboratory

Nature Communications, 2019, vol. 10, issue 1, 1-7

Abstract: Abstract Exotic spin-dependent interactions between fermions have recently attracted attention in relation to theories beyond the Standard Model. The exotic interactions can be mediated by hypothetical fundamental bosons which may explain several unsolved mysteries in physics. Here we expand this area of research by probing an exotic parity-odd spin- and velocity-dependent interaction between the axial-vector electron coupling and the vector nucleon coupling for polarized electrons. This experiment utilizes a high-sensitivity atomic magnetometer, based on an optically polarized vapor that is a source of polarized electrons, and a solid-state mass containing unpolarized nucleons. The atomic magnetometer can detect an effective magnetic field induced by the exotic interaction between unpolarized nucleons and polarized electrons. We set an experimental limit on the electron-nucleon coupling $$g_{\mathrm{A}}^{\mathrm{e}}g_{\mathrm{V}}^{\mathrm{N}} \,

Date: 2019
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DOI: 10.1038/s41467-019-10169-1

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