Document Detail

Search for Sub-eV Mass Solar Axions by the CERN Axion Solar Telescope with ^{3}He Buffer Gas.
MedLine Citation:
PMID:  22243149     Owner:  NLM     Status:  In-Data-Review    
The CERN Axion Solar Telescope (CAST) has extended its search for solar axions by using ^{3}He as a buffer gas. At T=1.8  K this allows for larger pressure settings and hence sensitivity to higher axion masses than our previous measurements with ^{4}He. With about 1 h of data taking at each of 252 different pressure settings we have scanned the axion mass range 0.39  eV≲m_{a}≲0.64  eV. From the absence of excess x rays when the magnet was pointing to the Sun we set a typical upper limit on the axion-photon coupling of g_{aγ}≲2.3×10^{-10}  GeV^{-1} at 95% C.L., the exact value depending on the pressure setting. Kim-Shifman-Vainshtein-Zakharov axions are excluded at the upper end of our mass range, the first time ever for any solar axion search. In the future we will extend our search to m_{a}≲1.15  eV, comfortably overlapping with cosmological hot dark matter bounds.
M Arik; S Aune; K Barth; A Belov; S Borghi; H Bräuninger; G Cantatore; J M Carmona; S A Cetin; J I Collar; T Dafni; M Davenport; C Eleftheriadis; N Elias; C Ezer; G Fanourakis; E Ferrer-Ribas; P Friedrich; J Galán; J A García; A Gardikiotis; E N Gazis; T Geralis; I Giomataris; S Gninenko; H Gómez; E Gruber; T Guthörl; R Hartmann; F Haug; M D Hasinoff; D H H Hoffmann; F J Iguaz; I G Irastorza; J Jacoby; K Jakovčić; M Karuza; K Königsmann; R Kotthaus; M Krčmar; M Kuster; B Lakić; J M Laurent; A Liolios; A Ljubičić; V Lozza; G Lutz; G Luzón; J Morales; T Niinikoski; A Nordt; T Papaevangelou; M J Pivovaroff; G Raffelt; T Rashba; H Riege; A Rodríguez; M Rosu; J Ruz; I Savvidis; P S Silva; S K Solanki; L Stewart; A Tomás; M Tsagri; K van Bibber; T Vafeiadis; J A Villar; J K Vogel; S C Yildiz; K Zioutas;
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Publication Detail:
Type:  Journal Article     Date:  2011-12-23
Journal Detail:
Title:  Physical review letters     Volume:  107     ISSN:  1079-7114     ISO Abbreviation:  Phys. Rev. Lett.     Publication Date:  2011 Dec 
Date Detail:
Created Date:  2012-01-16     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0401141     Medline TA:  Phys Rev Lett     Country:  United States    
Other Details:
Languages:  eng     Pagination:  261302     Citation Subset:  IM    
Dogus University, Istanbul, Turkey.
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