New limits on di-nucleons decay into invisible channels

Tretyak, V. I.; Denisov, V. Yu.; Zdesenko, Yu. G.

New limits on di-nucleons decay into invisible channels

Authors

Tretyak, V. I.

Denisov, V. Yu.

Zdesenko, Yu. G.

Description

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.
3 pages, accepted in JETP Letters