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  • New Constraints on the Axio...
    Gavrilyuk, Yu. M.; Gangapshev, A. N.; Derbin, A. V.; Drachnev, I. S.; Kazalov, V. V.; Kuzminov, V. V.; Mikulich, M. S.; Muratova, V. N.; Tekueva, D. A.; Unzhakov, E. V.; Yakimenko, S. P.

    JETP letters, 07/2022, Letnik: 116, Številka: 1
    Journal Article

    The resonant excitation of the 83 Kr first excited nuclear level ( E = 9.4 keV) by solar axions whose fluxes depend on the axion–electron coupling constant g Ae is sought. The γ- and X-ray photons and the conversion and Auger electrons from the excited-level relaxation are detected with a gas proportional counter of a low-background detector in the underground Baksan Neutrino Observatory (Institute for Nuclear Research, Russian Academy of Sciences). As a result, a new constraint ≤ 1.50 × 10 –17 (90% C.L.) has been obtained for the axion–electron and axion–nucleon coupling constants, which corresponds to new constraints on the axion mass m A ≤ 320 eV and m A ≤ 4.6 eV in the KSVZ and DFSZ axion models, respectively.