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VOLUME 79 | ISSUE 3 | PAGE 136
New limits on di-nucleons decay into invisible channels
V. I. Tretyak, V. Yu. Denisov, Yu. G. Zdesenko
Institute for Nuclear Research, MSP 03680 Kiev, Ukraine

PACS: 11.30.-j, 12.60.-i, 29.40.Mc
Abstract
Data of the radiochemical experiment (E.L. Fireman, 1978) with 1.7 t of KC2H3O2, accumulated deep underground during \simeq1 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 τnp>2.1• 1025 yr and τnn>4.2• 1025 yr (at 90% C.L.) are better (or competitive) than those established in the recent experiments.


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