Author(s)
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Eleftheriadis, Christos (Thessaloniki U.) ; Andriamonje, Samuel A ; Aune, S ; Barth, K ; Belov, A ; Beltran, B ; Bräuninger, H ; Carmona, J ; Cebrián, S ; Collar, J I ; Dafni, T ; Davenport, M ; Di Lella, L ; Englhauser, J ; Fanourakis, G K ; Ferrer-Ribas, E ; Fischer, H ; Franz, J ; Friedrich, P ; Geralis, T ; Giomataris, Ioanis ; Gninenko, S ; Gomez, H ; Hasinoff, M ; Heinsius, F H ; Hoffmann, D H H ; Irastorza, I G ; Jacoby, J ; Jakovcic, K ; Kang, D ; Königsmann, K C ; Kotthaus, R ; Krcmar, M ; Kousouris, K ; Kuster, M ; Laki, B ; Lasseur, C ; Liolios, A ; Ljubicic, cA ; Lutz, G ; Luzón, G ; Miller, D ; Morales, A ; Morales, J ; Nordt, A ; Ortiz, A ; Papaevangelou, T ; Placci, A ; Raffelt, G ; Riege1, H ; Rodríguez, A ; Ruz, J ; Savvidis, I ; Semertzidis, Y K ; Serpico, Pasquale Dario ; Stewart, L ; Villar, J ; Vogel, J ; Walckiers, L ; Zioutas, K |
Affiliation
| (CERN) ; (DAPNIA Centred'Etudes Nucleairesde Saclay CEA-Saclay, Gif-sure Yvette, France) ; (Department of Physics, Queen's University, Kingston, Ontario) ; (Technische Universitat Darmstadt, IKP, Darmstadt, Germany) ; (Gesellschaft fur Schwerionenforschung, GSI Darmstadt, Germany) ; (Max-Planck-Institut fur extraterrestrische Physik, Garching, Germany) ; (Instituto de Fisica Nuclear y Altas Energias, Universidad de Zaragoza, Zaragoza, Spain) ; (Enrico Fermi Institute and KICP, University of Chicago, Chicago, USA) ; (Aristotle U., Thessaloniki) ; (National Center for Scientific Research "Demokritos", Athens, Greece) ; (Freiburg U.) ; (Institute for Nuclear Research (INR), Russian Academy of Sciences, Moscow, Russia) ; (Department of Physics and Astronomy, University of British Columbia, Department of Physics, Vancouver, Canada) ; (Johann Wolfgang Goethe-Universitat, Institut fur Angewandte Physik, Frankfurt am Main, Germany) ; (Max-Planck-Institut fur Physik (Werner-Heisenberg-Institut), Munich, Germany) ; (Rudjer Boskovic Institute, Zagreb, Croatia) ; (Physics Department, University of Patras, Patras, Greece) |
Abstract
| Axions are expected to be produced in the sun via the Primakoff process. They may be detected through the inverse process in the laboratory, under the influence of a strong magnetic field, giving rise to X-rays of energies in the range of a few keV. Such an Axion detector is the CERN Axion Solar Telescope (CAST), collecting data since 2003. Results have been published, pushing the axion-photon coupling g$_{a\gamma}$ below the 10$^{-10}$ GeV$^{-1}$ limit at 95% CL, for axion masses less than 0.02 eV. This limit is nearly an order of magnitude lower than previous experimental limits and surpassed for the first time limits set from astrophysical arguments based on the energy-loss concept. The experiment is currently exploring axion masses in the range of 0.02 eV $< m_a <$ 1.1 eV. In the next run, currently under preparation, the axion mass explored will be extended up to the limit of 1.1 eV, testing for the first time the region of theoretical axion models with the axion helioscope method. |