Improved bounds on ultralight scalar dark matter in the radio-frequency range

• URL: http://arxiv.org/abs/2201.02042v2
• Date: Thu, 13 Jan 2022 11:06:32 GMT
• Title: Improved bounds on ultralight scalar dark matter in the radio-frequency range
• Authors: Oleg Tretiak (1,2), Xue Zhang (1,2), Nataniel L. Figueroa (1,2), Dionysios Antypas (1,2), Andrea Brogna (1), Abhishek Banerjee (3), Gilad Perez (3), Dmitry Budker (1,2,4)((1) Johannes Gutenberg-Universit\"at Mainz, Germany, (2) Helmholtz-Institut, GSI Helmholtzzentrum f\"ur Schwerionenforschung, Mainz, Germany, (3) Department of Particle Physics and Astrophysics, Weizmann Institute of Science, Rehovot, Israel, (4) Department of Physics, University of California, Berkeley, California, USA)
• Abstract summary: We present a search for fundamental constant oscillations in the range $20$kHz-$100$ MHz, that may arise within models for ultralight dark matter (UDM) Using two independent, significantly upgraded optical-spectroscopy apparatus, we achieve up to $times$1000 greater sensitivity in the search relative to previous work.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We present a search for fundamental constant oscillations in the range $20$~kHz-$100$ MHz, that may arise within models for ultralight dark matter (UDM). Using two independent, significantly upgraded optical-spectroscopy apparatus, we achieve up to $\times$1000 greater sensitivity in the search relative to previous work. We report no observation of UDM and thus constrain respective couplings to electrons and photons within the investigated UDM particle mass range $8\cdot 10^{-11}-4\cdot 10^{-7}$ eV. The constraints significantly exceed previously set bounds, and as we show, may surpass in future experiments those provided by equivalence-principle experiments in a specific case regarding the combination of UDM couplings probed by the latter.

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