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Search for invisible axion dark matter of mass m$_a=43~\mu$eV with the QUAX--$a\gamma$ experiment

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arxiv 2012.09498 v2 pith:WTKCB44M submitted 2020-12-17 hep-ex physics.ins-det

D. Alesini , C. Braggio , G. Carugno , N. Crescini , D. D'Agostino , D. Di Gioacchino , R. Di Vora , P. Falferi
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U. Gambardella C. Gatti G. Iannone C. Ligi A. Lombardi G. Maccarrone A. Ortolan R. Pengo A. Rettaroli G. Ruoso L. Taffarello S. Tocci
This is my paper · ORCID
classification hep-exphysics.ins-det
keywords gammacavityexperimentaxiongalacticlimitmassquax--
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

A haloscope of the QUAX--$a\gamma$ experiment composed of an oxygen-free high thermal conductivity-Cu cavity inside an 8.1 T magnet and cooled to $\sim200$ mK is put in operation for the search of galactic axion with mass $m_a\simeq43~\mu\text{eV}$. The power emitted by the resonant cavity is amplified with a Josephson parametric amplifier whose noise fluctuations are at the standard quantum limit. With the data collected in about 1 h at the cavity frequency $\nu_c=10.40176$ GHz, the experiment reaches the sensitivity necessary for the detection of galactic QCD-axion, setting the $90\%$ confidence level limit to the axion-photon coupling $g_{a\gamma\gamma}<0.639\times10^{-13}$ GeV$^{-1}$.

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Cited by 4 Pith papers

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  1. Abelian-Higgs vortices in the oscillating axion background

    hep-ph 2025-07 conditional novelty 7.0 of 10

    Axion oscillations can resonantly amplify electric fields inside Abelian-Higgs vortex cores and induce attractive or repulsive forces between vortices, even in the BPS limit.

  2. Dark Matter Haloscope with a Disordered Dielectric Absorber

    hep-ph 2025-05 conditional novelty 7.0 of 10

    A disordered dielectric powder can act as a broadband dark-matter-to-photon conversion target, and the proposed DPHaSE experiment could probe QCD axions and dark photons in the 10 meV to 1 eV range.

  3. Axiverse Lampposts

    hep-ph 2026-02 conditional novelty 6.0 of 10

    In a hierarchical multi-axion theory with random couplings, axion field ranges shrink with 1/sqrt(N), generic axion–SM couplings are suppressed, but the QCD axion's coupling is unsuppressed.

  4. Dark Matter Nuclear Magnetic Resonance is Sensitive to Dark Photons and the Axion-Photon Coupling

    hep-ph 2025-05 conditional novelty 6.0 of 10

    CASPEr-Gradient, an NMR axion search, could simultaneously probe dark photon kinetic mixing to about 3e-16 and axion-photon coupling to about 2e-16 GeV^-1 near a mass of 1 micro-eV.

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