First results from the CERN Axion Solar Telescope (CAST)

@inproceedings{collaboration2004FirstRF,
  title={First results from the CERN Axion Solar Telescope (CAST)},
  author={Cast collaboration},
  year={2004}
}
(Dated: Hypothetical axion-like particles with a two-photon interaction would be produced in the Sun by the Primakoff process. In a laboratory magnetic field (“axion helioscope”) they would be trans-formed into X-rays with energies of a few keV. Using a decommissioned LHC test magnet, CAST ran for about 6 months during 2003. The first results from the analysis of these data are presented here. No signal above background was observed, implying an upper limit to the axion-photon coupling g aγ < 1… 

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