2011/01/07 by A. V. Derbin, A. Derbin, A. S. Kayunov +7
Physics and Astronomy · #Atomic and Subatomic Physics Research #Dark Matter and Cosmic Phenomena #Particle physics theoretical and experimental studies #astro-ph.SR #hep-ex #hep-ph
paper · pdf · doi:10.1103/physrevd.83.023505
published as Phys.Rev.D83:023505,2011 · 7 pages, 4 figures
openalex publication_date 2011/01/07 · arxiv created 2011/01/12 · arxiv updated 2011/02/25 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The search for solar axions produced by Compton (\ensuremathγ+e^\ensuremath-\ensuremath→e^\ensuremath-+A) and bremsstrahlunglike (e^\ensuremath-+Z\ensuremath→Z+e^\ensuremath-+A) processes has been performed. The axion flux in both cases depends on the axion-electron coupling constant. The resonant excitation of the low-lying nuclear level of 169Tm was looked for: A+169Tm\ensuremath→169Tm*\ensuremath→169Tm+\ensuremathγ (8.41 keV). The Si(Li) detector and 169Tm target installed inside the low-background setup were used to detect 8.41 keV \ensuremathγ rays. As a result, a new model-independent restriction on the axion-electron and the axion-nucleon couplings was obtained: gAe\ifmmode×\else\texttimes\fi|gAN0+gAN3|\ensuremath≤2.1\ifmmode×\else\texttimes\fi10^\ensuremath-14. In the model of the hadronic axion this restriction corresponds to the upper limit on the axion-electron coupling and on the axion mass gAe\ifmmode×\else\texttimes\fimA\ensuremath≤3.1\ifmmode×\else\texttimes\fi10^\ensuremath-7 eV (90% C.L.). The limits on the axion mass are mA\ensuremath≤105 eV and mA\ensuremath≤1.3 keV for the Dine-Fischler-Srednicki-Zhitnitskii- and Kim-Shifman-Vainstein-Zakharov-axion models, correspondingly (90% C.L.).