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22 March 2025 |
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Article overview
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New Constraints on Spin-Spin-Velocity-Dependent Interaction | | Wei Ji
; Weipeng Li
; Pavel Fadeev
; Jianan Qin
; Kai Wei
; Yong-Chun Liu
; Dmitry Budker
; | | Date: |
1 Aug 2022 | | Abstract: | The existence of exotic spin-dependent forces may shine light on new physics
beyond the Standard Model. We utilize two iron shielded SmCo5 electron-spin
sources and two optically pumped magnetometers to search for exotic long-range
spin- and velocity-dependent forces. The orientations of spin sources and
magnetometers are optimized such that the exotic force is enhanced and
common-mode noise is effectively subtracted. We set direct limits on
proton-electron interactions in the force range from 1 cm to 1 km, which are
more than 13 orders of magnitude tighter than previous electron-antiproton and
neutron-proton couplings. Our experiment also represents more than one order of
magnitude improvement for the electron-electron couplings. | | Source: | arXiv, 2208.00658 | | Services: | Forum | Review | PDF | Favorites | |
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