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Final Results of GERDA on the Two-Neutrino Double- Decay Half-Life of Ge
GERDA collaboration, M. Agostini, A. Alexander +116
We present the measurement of the two-neutrino double- decay rate of Ge performed with the GERDA Phase II experiment. With a subset of the entire GERDA exposure, 11.8 kg$…
Search for exotic physics in double- decays with GERDA Phase II
The GERDA collaboration, M. Agostini, A. Alexander +111
A search for Beyond the Standard Model double- decay modes of Ge has been performed with data collected during the Phase II of the GERmanium Detector Array (GERDA) experi…
A Search for Electron Neutrino Transitions to Sterile States in the BEST Experiment
V. V. Barinov, B. T. Cleveland, S. N. Danshin +27
The Baksan Experiment on Sterile Transitions (BEST) probes the gallium anomaly and its possible connections to oscillations between active and sterile neutrinos. Based on the Galli…
Modeling of GERDA Phase II data
GERDA collaboration, Matteo Agostini, Alexander M. Bakalyarov +107
The GERmanium Detector Array (GERDA) experiment at the Gran Sasso underground laboratory (LNGS) of INFN is searching for neutrinoless double-beta () decay of Ge. The t…
2K(2ν)-Capture in Xe-124: Results of Data Processing for an Exposure of 37.7 kg x day
Yu. M. Gavriljuk, A. M. Gangapshev, V. V. Kazalov +4
The results of the experimental search for two-neutrino -capture in Xe with a large copper proportional counter obtained by processing the data for an exposure of 37.7…
Improved limit on neutrinoless double beta decay of Ge from GERDA Phase II
M. Agostini, A. M. Bakalyarov, M. Balata +105
The GERDA experiment searches for the lepton number violating neutrinoless double beta decay of Ge (Ge Se + 2e) operating bare Ge diodes with…
Comparative study of the double -shell-vacancy production in single- and double-electron capture decay
S. S. Ratkevich, A. M. Gangapshev, Yu. M. Gavrilyuk +6
We carried out the comparative study of the signal from the decay of double -shell vacancy production that follows after single -shell electron capture of Kr and doubl…
Background free search for neutrinoless double beta decay with GERDA Phase II
M. Agostini, M. Allardt, A. M. Bakalyarov +113
The Standard Model of particle physics cannot explain the dominance of matter over anti-matter in our Universe. In many model extensions this is a very natural consequence of neutr…
Limit on the Radiative Neutrinoless Double Electron Capture of Ar from GERDA Phase I
M. Agostini, M. Allardt, A. M. Bakalyarov +115
Neutrinoless double electron capture is a process that, if detected, would give evidence of lepton number violation and the Majorana nature of neutrinos. A search for neutrinoless…
The study of the thermal neutron flux in the deep underground laboratory DULB-4900
V. V. Alekseenko, Yu. M. Gavrilyuk, A. M. Gangapshev +10
We report on the study of thermal neutron flux using monitors based on mixture of ZnS(Ag) and LiF enriched with a lithium-6 isotope at the deep underground laboratory DULB-4900 at…
Search for 2K(2ν)-capture of Xe-124
Yu. M. Gavrilyuk, A. M. Gangapshev, V. V. Kazalov +5
The results of a search for two neutrino mode of double K-capture of Xe-124 using a large copper low-background proportional counter are presented. Data collected during 3220 hours…
The origin of the background radioactive isotope Xe-127 in the sample of Xe enriched in Xe-124
Yu. M. Gavrilyuk, A. M. Gangapshev, V. V. Kazalov +5
The results of investigation of Xe-127 radioactive isotope production in the xenon sample enriched in Xe-124, Xe-126, Xe-128 are presented. The isotope is supposed to be the source…
Results of a search for daily and annual variations of the Po-214 half-life at the two year observation period
E. N. Alexeyev, Yu. M. Gavrilyuk, A. M. Gangapshev +4
The brief description of installation TAU-2 intended for long-term monitoring of the half-life value () of the Po is presented. The methods of measurement and…
Results on decay with emission of two neutrinos or Majorons in Ge from GERDA Phase I
M. Agostini, M. Allardt, A. M. Bakalyarov +109
A search for neutrinoless decay processes accompanied with Majoron emission has been performed using data collected during Phase I of the GERmanium Detector Array (GERDA) expe…
First result of the experimental search for the 9.4 keV solar axion reactions with Kr-83 in the copper proportional counter
Yu. M. Gavrilyuk, A. M. Gangapshev, A. V. Derbin +13
The experimental search for solar hadronic axions is started at the Baksan Neutrino Observatory of the Institute for Nuclear Researches Russian Academy of Science. It is assumed th…
Sources of the systematic errors in measurements of Po-214 decay half-life time variations at the Baksan deep underground experiments
E. N. Alexeyev, Yu. M. Gavrilyuk, A. M. Gangapshev +4
The design changes of the Baksan low-background TAU-1 and TAU-2 set-ups allowed to improve a sensitivity of Po-214 half-life (τ) measurements up to the 2.5 x 10^{-4} are described.…
First result of the experimental search for the 2K-capture of Xe-124 with the copper proportional counter
Yu. M. Gavrilyuk, A. M. Gangapshev, V. V. Kazalov +5
First result of experiment for searching of 2K-capture of Xe-124 with the large-volume copper proportional counter is given. The 12 litre sample with 63.3% (44 g) of Xe-124 was use…
Results on neutrinoless double beta decay of 76Ge from GERDA Phase I
M. Agostini, M. Allardt, E. Andreotti +112
Neutrinoless double beta decay is a process that violates lepton number conservation. It is predicted to occur in extensions of the Standard Model of particle physics. This Letter…
Experimental test of the time stability of the half-life of alpha-decay Po-214 nuclei
E. N. Alexeyev, Ju. M. Gavriljuk, A. M. Gangapshev +6
A method and results of an experimental test of the time stability of the half-life of alpha-decay Po-214 nuclei are presented. Two underground installations aimed at monitoring th…
Results of a search for 2β-decay of Xe-136 with high pressure copper proportional counters in Baksan Neutrino Observatory INR RAS
Ju. M. Gavriljuk, A. M. Gangapshev, V. V. Kazalov +5
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…
Search for 2K(2ν)-capture of Kr-78
Ju. M. Gavriljuk, A. M. Gangapshev, V. V. Kazalov +5
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 compariso…
Results of a search for 2-decay of Xe with high-pressure copper proportional counters in Baksan Neutrino Observatory
Ju. M. Gavriljuk, A. M. Gangapshev, V. V. Kuzminov +2
The experiment for the 2-decay of Xe search with two high-pressure copper proportional counters has been held in Baksan neutrino observatory. The search for the process…
New Limit for the Half-Life of 2K(2neutrino)-Capture Decay Mode of 78Kr
Ju. M. Gavriljuk, V. V. Kuzminov, N. Ya. Osetrova +1
Features of data accumulated at 1817 hours in the experimental search for 2K(2 ν)-capture decay mode of Kr-78 are discussed. The new limit for this decay half-life is found to be T…