New Constraints on the Axion–Electron Coupling Constant for Solar Axions

• Published in: JETP letters Vol. 116; no. 1; pp. 11 - 17
• Main Authors: 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.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01-07-2022; Springer Nature B.V
• Subjects: Atomic; Augers; Biological and Medical Physics; Biophysics; Coupling; Electrons; Fields; Molecular; Neutrinos; Nuclear research; Nuclei; Optical and Plasma Physics; Particle and Nuclear Physics; Particles; Physics; Physics and Astronomy; Proportional counters; Quantum Information Technology; Solid State Physics; Spintronics
• ISSN: 0021-3640; 1090-6487
• DOI: 10.1134/S0021364022601075

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.