First results from the CERN Axion Solar Telescope (CAST)

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 transformed into X-rays with energies of a few keV. Using a decommissioned LHC test magnet, CAST has be...

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Detalles Bibliográficos
Autores principales: Zioutas, K., Andriamonje, S., Arsov, V., Aune, S., Autiero, D., Avignone, F.T., Barth, K., Belov, A., Beltran, B., Brauninger, H., Carmona, J.M., Cebrian, S., Chesi, E., Collar, J.I., Creswick, R., Dafni, T., Davenport, M., Di Lella, L., Eleftheriadis, C., Englhauser, J., Fanourakis, G., Farach, H., Ferrer, E., Fischer, H., Franz, J., Friedrich, P., Geralis, T., Giomataris, I., Gninenko, S., Goloubev, N., Hasinoff, M.D., Heinsius, F.H., Hoffmann, D.H.H., Irastorza, I.G., Jacoby, J., 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.W., Morales, A., Morales, J., Mutterer, M., Nikolaidis, A., Ortiz, A., Papaevangelou, T., Placci, A., Raffelt, G., Ruz, J., Riege, H., Sarsa, M.L., Savvidis, I., Serber, W., Serpico, P., Semertzidis, Y., Stewart, L., Vieira, J.D., Villar, J., Walckiers, L., Zachariadou, K.
Lenguaje:eng
Publicado: 2004
Materias:
Particle Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1103/PhysRevLett.94.121301
http://cds.cern.ch/record/802554
Descripción
Sumario: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 transformed into X-rays with energies of a few keV. Using a decommissioned LHC test magnet, CAST has been running 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 < 1.16 10^{-10} GeV^-1 at 95% CL for m_a <~0.02 eV. This limit is comparable to the limit from stellar energy-loss arguments and considerably more restrictive than any previous experiment in this axion mass range.

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