Particle Dark Matter and Solar Axion Searches with a small germanium detector at the Canfranc Underground Laboratory
arXiv:hep-ex/0101037 · doi:10.1016/S0927-6505(01)00117-7
Abstract
A small, natural abundance, germanium detector (COSME) has been operating recently at the Canfranc Underground Laboratory (Spanish Pyrenees) in improved conditions of shielding and overburden with respect to a previous operation of the same detector. An exposure of 72.7 kg day in these conditions has at present a background improvement of about one order of magnitude compared to the former operation of the detector. These new data have been applied to a direct search for WIMPs and solar axions. New WIMP exclusion plots improving the current bounds for low masses are reported. The paper also presents a limit on the axion-photon coupling obtained from the analysis of the data looking for a Primakoff axion-to-photon conversion and Bragg scattering inside the crystal.
arXiv commentLaTeX, 11 pages, 4 figures, submitted to Astropart. Phys
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