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Search for 14.4 keV solar axions emitted in the M1-transition of 57Fe nuclei with CAST

Abstract : 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 57Fe, 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_{a\gamma} |-1.19 g_{aN}^{0}+g_{aN}^{3}|<1.36\times 10^{-16} GeV^{-1} for m_{a}<0.03 eV at the 95% confidence level.
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http://hal.in2p3.fr/in2p3-01019422
Contributor : Dominique Girod <>
Submitted on : Monday, July 7, 2014 - 11:12:16 AM
Last modification on : Tuesday, November 19, 2019 - 2:43:10 AM

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S. Andriamonje, S. Aune, D. Autiero, K. Barth, A. Belov, et al.. Search for 14.4 keV solar axions emitted in the M1-transition of 57Fe nuclei with CAST. Journal of Cosmology and Astroparticle Physics, Institute of Physics (IOP), 2009, 2009(12), pp.002. ⟨10.1088/1475-7516/2009/12/002⟩. ⟨in2p3-01019422⟩

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