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20 April 2024

» arxiv » 0904.2103

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Search for solar axion emission from 7Li and D(p,gamma)3He nuclear decays with the CAST gamma-ray calorimeter
CAST Collaboration ; S. Andriamonje ; S. Aune ; D. Autiero ; K. Barth ; A. Belov ; B. Beltran ; H. Brauninger ; J. M. Carmona ; S. Cebrian ; J. I. Collar ; T. Dafni ; M. Davenport ; L. Di. Lella ; C. Eleftheriadis ; J. Englhauser ; G. Fanourakis ; E. Ferrer. Ribas ; H. Fischer ; J. Franz ; P. Friedrich ; T. Geralis ; I. Giomataris ; S. Gninenko ; H. Gomez ; M. Hasinoff ; F. H. Heinsius ; D. H. H. Hoffmann ; I. G. Irastorza ; J. Jacoby ; K. Jakovcic ; D. Kang ; K. Konigsmann ; R. Kotthaus ; M. Krcmar ; K. Kousouris ; M. Kuster ; B. Lakic ; C. Lasseur ; A. Liolios ; A. Ljubicic ; G. Lutz ; G. Luzon ; D. W. Miller ; J. Morales ; A. Ortiz ; T. Papaevangelou ; A. Placci ; G. Raffelt ; H. Riege ; A. Rodriguez ; J. Ruz ; I. Savvidis ; Y. Semertzidis ; P. Serpico ; L. Stewart ; J. D. Vieira ; J. Villar ; J. Vogel ; L. Walckiers ; K. Zioutas ;
Date:	14 Apr 2009
Abstract:	We present the results of a search for a high-energy axion emission signal from 7Li (0.478 MeV) and D(p,gamma)3He (5.5 MeV) nuclear transitions using a low-background gamma-ray calorimeter during Phase I of the CAST experiment. These so-called "hadronic axions" could provide a solution to the long-standing strong-CP problem and can be emitted from the solar core from nuclear M1 transitions. This is the first such search for high-energy pseudoscalar bosons with couplings to nucleons conducted using a helioscope approach. No excess signal above background was found.
Source:	arXiv, 0904.2103
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