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          Institute: MPI für Physik     Collection: MPI für Physik     Display Documents

ID: 542971.0, MPI für Physik / MPI für Physik
An Improved limit on the axion-photon coupling from the CAST experiment
Authors:Andriamonje, S.; Aune, S.; Autiero, D.; Barth, K.; Belov, A.; Beltran, B.; Brauninger, H.; Carmona, J. M.; Cebrian, S.; Collar, J. I.; Dafni, T.; Davenport, M.; Di Lella, L.; Eleftheriadis, C.; Englhauser, J.; Fanourakis, G.; Ferrer Ribas, E.; 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.; Kuster, M.; Lakic, B.; Lasseur, C.; Liolios, A.; Ljubicic, A.; Lutz, G.; Luzon, G.; Miller, D.; Morales, A.; Morales, J.; Ortiz, A.; Papaevangelou, T.; Placci, A.; Raffelt, G.; Riege, H.; Rodrguez, A.; Ruz, J.; Savvidis, I.; Semertzidis, Y.; Serpico, P.; Stewart, L.; Vieira, J.; Villar, J.; Vogel, J.; Walckiers, L.; Zioutas, K.
Date of Publication (YYYY-MM-DD):2007
Title of Journal:Journal of Cosmology and Astroparticle Physics
Journal Abbrev.:JCAP
Issue / Number:04
Start Page:010
Audience:Not Specified
Intended Educational Use:No
Abstract / Description:We have searched for solar axions or similar particles that couple to two photons by using the CERN Axion Solar Telescope (CAST) setup 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 8.8 x 10^{-11} GeV^{-1} at 95% CL for m_a <~ 0.02 eV. This result is the best experimental limit over a broad range of axion masses and for m_a <~ 0.02 eV also supersedes the previous limit derived from energy-loss arguments on globular-cluster stars.
Classification / Thesaurus:CAST
Comment of the Author/Creator:24 pages, 8 figures, 1 table, to be submitted to JCAP; v2: minor changes in the exclusion plot; v3: minor changes to match accepted version
External Publication Status:published
Document Type:Article
Communicated by:N.N.
Affiliations:MPI für Physik
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