Search for 8.4-keV Solar Axions Emitted in the M1 Transition in 169Tm Nuclei.

Authors :: Derbin, A. V.
Drachnev, I. S.
Muratova, V. N.
Semenov, D. A.
Trushin, M. V.
Unzhakov, E. V.
Source :: JETP Letters. Aug2023, Vol. 118 Issue 3, p160-164. 5p.
Publication Year :: 2023
Abstract: Axions with an energy of 8.4 keV emitted in the М1 transition in 169Tm nuclei in the Sun are sought in the → 169Tm* → (8.4 keV) reaction of resonant absorption by 169Tm nuclei on the Earth using a thulium garnet crystal as a bolometric detector. The flux of monochromatic 8.4‑keV axions has been calculated. New constraints on the axion–nucleon coupling constants have been obtained and, as a result, new upper bounds on the axion mass eV and eV have been obtained at 90% C.L. in the KSVZ and DFSZ models, respectively. [ABSTRACT FROM AUTHOR]