An improved limit on the axion-photon coupling from the CAST experiment (CROSBI ID 131880)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Andriamonje, S. ; Aune, S. ; Autiero, D. ; Barth, K. ; Belov, A. ; Beltrán, B. ; Bräuninger, H. ; Carmona, J. M. ; Cebrián, 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. ; Gómez, H. ; Hasinoff, M. ; Heinsius, F. H. ; Hoffmann, D. H. H. ; Irastorza, I. G. ; Jacoby, J. ; Jakovčić, Krešimir ; Kang, D. ; Königsmann, K. ; Kotthaus, R. ; Krčmar, Milica ; Kousouris, K. ; Kuster, M. ; Lakić, Biljana ; Lasseur, C. ; Liolios, A. ; Ljubičić, Ante ; Lutz, G. ; Luzón, G. ; Miller, D. ; Morales, A. ; Morales, J. ; Ortiz, A. ; Papaevangelou, T. ; Placci, A. ; Raffelt, G. ; Riege, H. ; Rodríguez, A. ; Ruz, J. ; Savvidis, I. ; Semertzidis, Y. ; Serpico, P. ; Stewart, L. ; Vieira, J. ; Villar, J. ; Vogel, J. ; Walckiers, L. ; Zioutas, K.
engleski
An improved limit on the axion-photon coupling from the CAST experiment
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 × 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.
axions; magnetic fields
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