17–22 Jun 2018
DESY in Hamburg
Europe/Berlin timezone

New Limits on Axion-Photon Coupling Constant for Solar Axions.

18 Jun 2018, 17:05
5m
Auditorium (DESY in Hamburg)

Auditorium

DESY in Hamburg

Notkestraße 85 22607 Hamburg Germany

Speaker

Mr Evgeniy Unzhakov (Petersburg Nuclear Physics Institute)

Description

A search for resonant excitation of the first nuclear level of $^{83}\rm{Kr}$ (9.4 keV) by axions formed in the Sun due to the Primakov effect have been carried out. To register the $\gamma$ and X-ray quanta, conversion and Auger electrons arising from the discharge of the nuclear level, we used a gas proportional counter located in a low-background setup in the Baksan underground laboratory of INR RAS. As a result, a new constraint on the coupling constant of the axion with the photon and the mass of the axion $|g_{A\gamma}\times m_A|\leq 6.3 \times 10^{-17}$, which in the KSVZ hadronic axion model corresponds to a new limit on the mass of the axion $m_A \leq 12.7$ eV for 95 \% c.l.

Primary author

Prof. Alexander Derbin (Petersburg Nuclear Physics Institute)

Co-authors

Dr Albert Gangapshev (Institute for Nuclear Research, RAS) Mr Evgeniy Unzhakov (Petersburg Nuclear Physics Institute) Dr Ilia Drachnev (PNPI NRC KI) Sergey Yakimenko (Institute for Nuclear Research, RAS) Dr Valentina Muratova (Petersburg Nuclear Physics Institute) Dr Valery Kuzminov (Institute for Nuclear Research, RAS) Dr Vladimir Kazalov (INR RAS) Dr Vladislav Kobychev (Kiev Institute for Nuclear Reearch)

Presentation materials