Search for solar axions using Li-7

Details Search for solar axions using Li-7 Search for solar axions using Li-7

2001-04-19

arxiv.org/abs/hep-ex/0104035v2

Phys.Rev.D64:115016,2001

Physics

High Energy Physics

High Energy Physics - Experiment

revtex, 4 pages with 2 figures, title revised, minor changes, matches version to appear in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.64.115016

We describe a novel approach to the search for solar, near-monochromatic hadronic axions, the latter being suggested to be created in the solar core during M1 transitions between the first excited level of Li-7, at 478 keV, and the ground state. As a result of Doppler broadening, in principle these axions can be detected via resonant absorption by the same nuclide on the Earth. Excited nuclei of Li-7 are produced in the solar interior by Be-7 electron capture and thus the axions are accompanied by emission of Be-7 solar neutrinos of energy 384 keV. An experiment was made which has yielded an upper limit on hadronic axion mass of 32 keV at the 95% confidence level.

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