New limits on di-nucleons decay into invisible channels

Details New limits on di-nucleons decay into invisible channels New limits on di-nucleons decay into invisible channels

2004-01-20

arxiv.org/abs/nucl-ex/0401022v1

JETPLett.79:106-108,2004; PismaZh.Eksp.Teor.Fiz.79:136-138,2004

Physics

Nuclear Physics

Nuclear Experiment

3 pages, accepted in JETP Letters

Scientific paper

10.1134/1.1719123

Data of the radiochemical experiment [E.L.Fireman, 1978] with 1.7 t of KC_2H_3O_2, 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 tau_np > 2.1 10^25 yr and tau_nn > 4.2 10^25 yr (at 90% C.L.) are better (or competitive) than those established in the recent experiments.

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