An improved limit on the axion-photon coupling from the CAST experiment

作者：Andriamonje S.; Aune S.; Autiero D.; Barth K.; Belov A.; Beltran B.; Braeuninger H.; Carmona J. M.; Cebrian S.; Collar J. I.; Dafni T.; Davenport M.; Di Lella L.; Eleftheriadis C.; Englhauser J.; Fanourakis G.; Ribas E. Ferrer; Fischer H.; Franz J.; Friedrich P.; Geralis T.; Giomataris I.; Gninenko S.; Gomez H.; Hasinoff M.; Heinsius F. H.; Hoffmann D. H. H.; Irastorza I. G.; Jacoby J.; Jakovcic K.; Kang D.; Konigsmann K.; Kotthaus R.; Krcmar M.; Kousouris K.

来源：Journal of Cosmology and Astroparticle Physics, 2007, (4): 010.

DOI：10.1088/1475-7516/2007/04/010

• magnetic
• fields
• axions

We have searched for solar axions or similar particles that couple to two photons by using the CERN Axion Solar Telescope (CAST) set-up with improved conditions in all detectors. From the absence of excess x-rays when the magnet was pointing to the Sun, we set an upper limit on the axion-photon coupling of g(a gamma) < 8.8 x 10(-11) GeV-1 at 95% CL for m(a) less than or similar to 0.02 eV. This result is the best experimental limit over a broad range of axion masses and for m(a) less than or similar to 0.02 eV also supersedes the previous limit derived from energy-loss arguments on globular cluster stars.

• 出版日期2007-4