First results from the CERN axion solar telescope.
Hypothetical axionlike 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 Large Hadron Collider test magnet, the CERN Axion Solar Telescope ran 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 g(agamma)<1.16x10(-10) GeV-1 at 95% C.L. for m(a) less, similar 0.02 eV. This limit, assumption-free, is comparable to the limit from stellar energy-loss arguments and considerably more restrictive than any previous experiment over a broad range of axion masses.
Zioutas
K
K
Aristotle University of Thessaloniki, Thessaloniki, Greece.
Andriamonje
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Arsov
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Aune
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Autiero
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Belov
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Bräuninger
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Carmona
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Cebrián
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Creswick
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Dafni
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Davenport
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Di Lella
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Eleftheriadis
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Englhauser
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Fanourakis
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Farach
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Ferrer
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Fischer
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Franz
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Friedrich
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Geralis
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Gninenko
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Hasinoff
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Heinsius
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Hoffmann
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Irastorza
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Jacoby
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Kang
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Königsmann
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Kotthaus
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Krcmar
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Kousouris
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Kuster
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Lakić
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Lasseur
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Miller
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Morales
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Morales
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Mutterer
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Nikolaidis
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Placci
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Raffelt
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Riege
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Vieira
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Villar
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Walckiers
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