Kavli Affiliate: Yevgeny V. Stadnik
| First 5 Authors: Peter Fierlinger, Jie Sheng, Yevgeny V. Stadnik, Chuan-Yang Xing,
| Summary:
We propose a novel detection method for axion dark matter using the Rabi
oscillation of neutron spins in beam-based measurements. If axions couple to
neutron spins, a background oscillating axion dark matter field would drive
transitions between spin-up and spin-down neutron states in a magnetic field
when the axion particle energy matches the energy gap between the spin states.
The transition can be detected in a double-Stern-Gerlach-type apparatus, with
the first splitter producing a pure spin-polarized neutron beam and the second
splitter selecting spin-flipped signals. Our approach offers enhanced detection
capability for axions within the $10^{-12} – 10^{-10} ,$eV mass window with
the capability to surpass the sensitivity of current laboratory experiments.
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