New limits on di-nucleons decay into invisible channels
Abstract
Data of the radiochemical experiment [E.L.Fireman, 1978] with 1.7 t of KC2H3O2, accumulated deep underground during ~1 yr, were reanalyzed to set limits on di-nucleons (nn and np) decays into invisible channels (disappearance, decay into neutrinos, etc.). The obtained lifetime bounds taunp > 2.1 1025 yr and taunn > 4.2 1025 yr (at 90% C.L.) are better (or competitive) than those established in the recent experiments.
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