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Search for QCD coupled axion dark matter with the MICROSCOPE space experiment

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arxiv 2504.00720 v1 pith:MF4KKQSE submitted 2025-04-01 hep-ph astro-ph.COgr-qchep-ex

classification hep-phastro-ph.COgr-qchep-ex
keywords axiondarkmattermicroscopecoupledexperimentmassessearch
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abstract

Axion dark matter coupled via QCD induces a non-zero differential acceleration between test masses of different composition. Tests of the equivalence principle, like the recent MICROSCOPE space mission, are sensitive to such a signal. We use the final released data of the MICROSCOPE experiment, to search for this effect. We find no positive signal consistent with the dark matter model, and set upper limits on the axion-gluon coupling that improve existing laboratory bounds by up to two orders of magnitude for axion masses in the $10^{-17}$ eV to $10^{-13}$ eV range.

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Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Constraining axion quadratic couplings with the Hulse-Taylor binary system

    hep-ph 2026-07 conditional novelty 6.0 of 10

    Orbital timing of the Hulse-Taylor binary pulsar gives the strongest published limits on quadratic axion-muon couplings for axion masses below about 10^-12 eV, and complementary limits on axion-neutron and axion-elect...

  2. Probing Quadratically Coupled Ultralight Dark Matter with the Laser Interferometer Space Antenna

    hep-ph 2026-07 conditional novelty 6.0 of 10

    LISA forecasts for quadratically coupled ultralight dark matter show competitive or superior sensitivity to terrestrial and astrophysical probes in selected mass windows, free of screening.

  3. Probing Quadratically Coupled Ultralight Dark Matter with Pulsar Timing Arrays

    hep-ph 2025-10 conditional novelty 6.0 of 10

    For quadratically coupled ultralight dark matter, pulsar timing arrays can set competitive coherent-signal limits at 10^-24–10^-22 eV, while stochastic-signal limits remain weaker than equivalence-principle constraint...

  4. Probing Fundamental Constant Oscillation in the Galactic Center with S-Star Spectroscopy

    hep-ph 2025-07 conditional novelty 6.0 of 10

    Time-resolved spectroscopy of S-stars around Sgr A* can probe oscillations of the fine-structure constant induced by superradiant axion clouds or dark-matter soliton cores, with future instruments potentially reaching...

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