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20 April 2024

» pubmed » pmid15903903

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First results from the CERN axion solar telescope
K Zioutas ; S Andriamonje ; V Arsov ; S Aune ; D Autiero ; F T Avignone ; K Barth ; A Belov ; B Beltrán ; H Bräuninger ; J M Carmona ; S Cebrián ; E Chesi ; J I Collar ; R Creswick ; T Dafni ; M Davenport ; L Di Lella ; C Eleftheriadis ; J Englhauser ; G Fanourakis ; H Farach ; E Ferrer ; H Fischer ; J Franz ; P Friedrich ; T Geralis ; I Giomataris ; S Gninenko ; N Goloubev ; M D Hasinoff ; F H Heinsius ; D H H Hoffmann ; I G Irastorza ; J Jacoby ; D Kang ; K Königsmann ; R Kotthaus ; M Krcmar ; K Kousouris ; M Kuster ; B Laki? ; C Lasseur ; A Liolios ; A Ljubici? ; G Lutz ; G Luzón ; D W Miller ; A Morales ; J Morales ; M Mutterer ; A Nikolaidis ; A Ortiz ; T Papaevangelou ; A Placci ; G Raffelt ; J Ruz ; H Riege ; M L Sarsa ; I Savvidis ; W Serber ; P Serpico ; Y Semertzidis ; L Stewart ; J D Vieira ; J Villar ; L Walckiers ; K Zachariadou ; ;
Date:	1 Apr 2005
Journal:	Phys Rev Lett, 94 (12), 121301
Abstract:	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.
Source:	PubMed, pmid15903903
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