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Contribution Poster dark matter

Poster (not participating in poster prize competition)

Search for resonant absorption of solar axions by $^{83}\rm{Kr}$ nuclei


  • Prof. Alexander DERBIN

Primary authors

Session and Location

Wednesday Session, Poster Wall #130 (Hölderlin-Room)

Abstract content

A.V. Derbin, I.S. Drachnev, Yu.M. Gavrilyuk, A.M. Gangapshev, V.V. Kazalov,V.V.Kuzminov,V.N. Muratova, S.I. Panasenko, S.S. Ratkevich, D.A. Tekueva, E.V.Unzhakov, S.P. Yakimenko

A search for resonant absorption of the solar axions with a wide continuous  spectra by $^{83}\rm{Kr}$ nuclei is continued with the krypton proportional counter at the Baksan Neutrino Observatory. Such an absorption should lead to the excitation of low-lying nuclear energy level of  $^{83}\rm{Kr}$. The results obtained after 613 days of measurements allow to constraint on the axion–photon coupling and axion mass $|g_{A\gamma}\times m_A| \leq 6.26\times 10^{-17}$ for Primakoff solar axions. This bound corresponds to the upper limit on KSVZ axion mass $m_{A}\leq12.7$ eV. For solar axions produced by Compton and bremsstrahlung like processes the limit on axion-electron coupling and KSVZ axion mass are $|g_{Ae}\times m_A| \leq 1.38\times 10^{-9}$~eV and $m_A \leq 86$ eV, correspondingly (all at 95\% C.L.).

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