RADES axion search results with a high-temperature superconducting cavity in an 11.7 T magnet
Saiyd Ahyoune, Alejandro Álvarez Melcón, S. Arguedas Cuendis, S. Calatroni, C. Cogollos, Alejandro Díaz‐Morcillo, Babette Döbrich, J. D. Gallego, J. M. García-Barceló, Benito Gimeno Martínez, J. Golm, X. Granados, J. Gutiérrez, Lloyd O. Herwig, I.G. Irastorza, N. Lamas, Antonio José Lozano Guerrero, C. Malbrunot, William Millar, Jordi Miralda‐Escudé, P. Navarro, Jose R. Navarro-Madrid, Teresa Puig, M. Siodlaczek, G. T. Telles, Walter Wuensch
Abstract
A bstract We describe the results of a haloscope axion search performed with an 11.7 T dipole magnet at CERN. The search used a custom-made radio-frequency cavity coated with high-temperature superconducting tape. A set of 27 h of data at a resonant frequency of around 8.84 GHz was analysed. In the range of axion mass 36.5676 μ eV to 36.5699 μ eV, corresponding to a width of 554 kHz, no signal excess hinting at an axion-like particle was found. Correspondingly, in this mass range, a limit on the axion to photon coupling-strength was set in the range between g aγ ≳ 6.3 × 10 −13 GeV −1 and g aγ ≳ 1.59 × 10 −13 GeV −1 with a 95% confidence level.