Search for axions from the Kuo-Sheng nuclear power reactor with a high-purity germanium detector
- Institute of Physics, Academia Sinica, Taipei 115, Taiwan (China)
- Institute of High Energy Physics, Chinese Academy of Science, Beijing 100039 (China)
- Department of Nuclear Physics, Institute of Atomic Energy, Beijing 102413 (China)
A search of axions produced in nuclear transitions was performed at the Kuo-Sheng Nuclear Power Station with a high-purity germanium detector of mass 1.06 kg at a distance of 28 m from the 2.9 GW reactor core. The expected experimental signatures were monoenergetic lines produced by their Primakoff or Compton conversions at the detector. Based on 459.0/96.3 days of reactor ON/OFF data, no evidence of axion emissions were observed and constraints on the couplings g{sub a{gamma}}{sub {gamma}} and g{sub aee} versus axion mass m{sub a} within the framework of invisible axion models were placed. The KSVZ and DFSZ models can be excluded for 10{sup 4} eV < or approx. m{sub a} < or approx. 10{sup 6} eV. Model-independent constraints on g{sub a{gamma}}{sub {gamma}}{center_dot}g{sub aNN}{sup 1}<7.7x10{sup -9} GeV{sup -2} for m{sub a} < or approx. 10{sup 5} eV and g{sub aee}{center_dot}g{sub aNN}{sup 1}<1.3x10{sup -10} for m{sub a} < or approx.10{sup 6} eV at 90% confidence level were derived. This experimental approach provides a unique probe for axion mass at the keV-MeV range not accessible to the other techniques.
- OSTI ID:
- 21020040
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 75, Issue 5; Other Information: DOI: 10.1103/PhysRevD.75.052004; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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