Abstract
Neutrino-less double-beta decays (0νββ) with the mass sensitivities of the solar and atmospheric ν masses are of great interest for studying the Majorana nature of neutrinos and the absolute mass spectrum as suggested by recent ν oscillation experiments. Here nuclear responses (nuclear matrix elements) for 0νββ are crucial. They are well studied experimentally by using charge-exchange, photo-nuclear and neutrino reactions. MOON(Mo Observatory Of Neutrinos) is a high sensitivity 0νβ β experiment with the mass sensitivity of an order of 30 meV. Experimental studies of the nuclear responses and the present status of MOON are briefly discussed.
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Ejiri, H. Nuclear responses for double-beta decays by hadron, photon, and neutrino probes and MOON experiment. Czech J Phys 56, 459–466 (2006). https://doi.org/10.1007/s10582-006-0109-3
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DOI: https://doi.org/10.1007/s10582-006-0109-3