Search for invisible axion dark matter of mass m(a)=43 mu eV with the QUAX-a gamma experiment
- Alesini, D.
- Braggio, C.
- Carugno, G.
- Crescini, N.
- D'Agostino, D.
- Gioacchino, D. Di
- Vora, R. Di
- Falferi, P.
- Gambardella, U.
- Gatti, C.
- Iannone, G.
- Ligi, C.
- Lombardi, A.
- Maccarrone, G.
- Ortolan, A.
- Pengo, R.
- Rettaroli, A.
- Ruoso, G.
- Taffarello, L.
- Tocci, S.
Publication date
January 2021
DOI Publisher
American Physical Society (APS)Abstract
A haloscope of the QUAX–aγ experiment composed of an oxygen-free high thermal conductivity-Cu cavity inside an 8.1 T magnet and cooled to ∼200 mK is put in operation for the search of galactic axion with mass ma≃43 μeV. 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 νc=10.40176GHz, the experiment reaches the sensitivity necessary for the detection of galactic QCD-axion, setting the 90% confidence level limit to the axion-photon coupling gaγγ<0.766×10−13 GeV−1
Add to ORKG