Constraints on axion-like dark matter from a SERF comagnetometer.

ABSTRACT: Ultralight axion-like particles are well-motivated relics that might compose the cosmological dark matter and source anomalous time-dependent magnetic fields. We report on terrestrial bounds from the Noble And Alkali Spin Detectors for Ultralight Coherent darK matter (NASDUCK) collaboration on the coupling of axion-like particles to neutrons and protons. The detector uses nuclei of noble-gas and alkali-metal atoms and operates in the Spin-Exchange Relaxation-Free (SERF) regime, achieving high sensitivity to axion-like dark matter fields. Conducting a month-long search, we cover the mass range of 1.4 × 10^-12 eV/c² to 2 × 10^-10 eV/c² and provide limits which supersede robust astrophysical bounds, and improve upon previous terrestrial constraints by

SUBMITTER: Bloch IM 

PROVIDER: S-EPMC10507093 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature