Abstract
The QCD axion is one of the most compelling candidates to explain the dark matter abundance of the Universe. With its extremely small mass (≪1 eV/c2), axion dark matter interacts as a classical field rather than a particle. Its coupling to photons leads to a modification of Maxwell's equations that can be measured with extremely sensitive readout circuits. DMRadio-m3 is a next-generation search for axion dark matter below 1 μeV using a >4 T static magnetic field, a coaxial inductive pickup, a tunable LC resonator, and a DC-SQUID readout. It is designed to search for QCD axion dark matter over the range 20 neV≲mac2≲800 neV (5 MHz<ν<200 MHz). The primary science goal aims to achieve Dine-Fischler-Srednicki-Zhitnitsky sensitivity above mac2≈120 neV (30 MHz), with a secondary science goal of probing Kim-Shifman-Vainshtein-Zakharov axions down to mac2≈40 neV (10 MHz).
Original language | English (US) |
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Article number | 103008 |
Journal | Physical Review D |
Volume | 106 |
Issue number | 10 |
DOIs | |
State | Published - Nov 15 2022 |
ASJC Scopus subject areas
- Nuclear and High Energy Physics