arXiv subjects

D. A. Zhantudueva

Publications and source records attributed to D. A. Zhantudueva.

2 recordsLinked to original sources

arXiv2011

Results of a search for 2β-decay of Xe-136 with high pressure copper proportional counters in Baksan Neutrino Observatory INR RAS

Search for ββ-decay of Xe-136 with two high pressure proportional counters is carried out in Baksan Neutrino Observatory. The experiment is based on comparision of spectra measured with natural and enriched xenon. The measured halfe life is equal to T_{1/2}=5.5^{+4.6}_{-1.7} \cdot 10^{21} yr (67% C.L.) for ββ2ν-decay mode. No evidence has been found for neutrinoless ββ-decay. The decay half life limit based on data measured during 17280 h is T_{1/2}(ββ0ν)\geq 4.9 \cdot 10^{23} yr (90% C.L.).

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arXiv2011

Search for 2K(2ν)-capture of Kr-78

Results of a search for Kr-78 double K-capture at the second stage of the experiment with high-pressure copper proportional counters are presented. The method is based on comparison of spectra measured with natural and enriched krypton. The total exposure of the low background measurements is for Kr-78 152 g*yr and for Kr-nat 106 g*yr. An excess of events was observed in the analysis of Kr-78 selected data collected during 2008-2010 years. This excess could correspond to a double K-capture of Kr-78 with the half-life of T_{1/2}(2K,2ν+ 0ν)=[1.4^{+2.2}_{-0.7}]\cdot 10^{22}$ yr (90% C.L.)

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