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Title: Search for 14.4 keV solar axions emitted in the M1-transition of {sup 57}Fe nuclei with CAST

Journal Article · · Journal of Cosmology and Astroparticle Physics
; ; ;  [1]; ; ; ;  [2];  [3]; ; ;  [4]; ; ;  [5];  [6];  [7];  [8]; ;
  1. IRFU, Centre d'Études Nucléaires de Saclay, Gif-sur-Yvette (France)
  2. European Organization for Nuclear Research (CERN), CH-1211 Genève 23 (Switzerland)
  3. Institute for Nuclear Research, Russian Academy of Sciences, Moscow (Russian Federation)
  4. Instituto de Física Nuclear y Altas Energías, Universidad de Zaragoza, Zaragoza (Spain)
  5. Max-Planck-Institut für extraterrestrische Physik, Giessenbachstrasse, 85748 Garching (Germany)
  6. Enrico Fermi Institute and KICP, University of Chicago, Chicago, IL (United States)
  7. Aristotle University of Thessaloniki, Thessaloniki (Greece)
  8. National Center for Scientific Research ''Demokritos'', Athens (Greece)

We have searched for 14.4 keV solar axions or more general axion-like particles (ALPs), that may be emitted in the M1 nuclear transition of {sup 57}Fe, by using the axion-to-photon conversion in the CERN Axion Solar Telescope (CAST) with evacuated magnet bores (Phase I). From the absence of excess of the monoenergetic X-rays when the magnet was pointing to the Sun, we set model-independent constraints on the coupling constants of pseudoscalar particles that couple to two photons and to a nucleon g{sub aγ}|−1.19g{sub aN}{sup 0}+g{sub aN}{sup 3}| < 1.36 × 10{sup −16} GeV{sup −1} for m{sub a} < 0.03 eV at the 95% confidence level.

OSTI ID:
22273111
Journal Information:
Journal of Cosmology and Astroparticle Physics, Vol. 2009, Issue 12; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1475-7516
Country of Publication:
United States
Language:
English