Homestake Mine experiments and weakly interacting particles in the universe

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Cosmology, Elementary Particle Interactions, Neutrinos, Radiation Detectors, Weak Interactions (Field Theory), Argon, Argon Isotopes, Solar Neutrinos

Scientific paper

The Ar-37 production rates in chlorine and potassium underground detectors at the Homestake Mine set limits on the number of energetic neutrinos and weakly interacting massive particles (WIMPs) in the universe. The chlorine (solar neutrino) experiment is inconsistent with the universe being closed by electron neutrinos with kinetic energies above 4 MeV. The potassium (solar neutrino background) experiment is inconsistent with universe closure by neutrinos and neutral current interacting WIMPs with masses less than 1 GeV and kinetic energies above 80 MeV. For neutrinos and WIMPs of 3.0 GeV mass the energy limits are somewhat higher.

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