V.I. Tretyak
A5064659207- Neutrino Physics Research
- Particle physics theoretical and experimental studies
- Nuclear physics research studies
- Dark Matter and Cosmic Phenomena
- Radiation Detection and Scintillator Technologies
- Atomic and Subatomic Physics Research
- Quantum Chromodynamics and Particle Interactions
- Astrophysics and Cosmic Phenomena
- High-Energy Particle Collisions Research
- Atomic and Molecular Physics
- Nuclear Physics and Applications
- Muon and positron interactions and applications
- Quantum, superfluid, helium dynamics
- Advanced Chemical Physics Studies
- Advanced NMR Techniques and Applications
- Radioactive Decay and Measurement Techniques
- Particle accelerators and beam dynamics
- Particle Detector Development and Performance
- Radioactive contamination and transfer
- Medical Imaging Techniques and Applications
- Astronomical and nuclear sciences
- Cosmology and Gravitation Theories
- Scientific Research and Discoveries
- Superconducting Materials and Applications
- Mass Spectrometry Techniques and Applications
Institute for Nuclear Research
2016-2025
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Gran Sasso
2010-2025
Istituto Nazionale di Fisica Nucleare
2014-2024
Amorepacific (South Korea)
2024
National Academy of Sciences of Ukraine
2006-2023
Institute for Scintillation Materials
2023
Gran Sasso Science Institute
2021
CEA Paris-Saclay
2021
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2021
University of California, Berkeley
2021
The NEMO 3 detector, which has been operating in the Fréjus underground laboratory since February 2003, is devoted to search for neutrinoless double-beta decay (beta beta 0v). half-lives of two neutrino 2v) have measured 100Mo and 82Se. After 389 effective days data collection from 2003 until September 2004 (phase I), no evidence was found approximately 7 kg 1 corresponding limits are T1/2(beta beta0v) > 4.6 x 10(23) yr 0v) 1.0 82Se (90% C.L.). Depending on nuclear matrix element...
The possibility to probe new physics scenarios of light Majorana neutrino exchange and right-handed currents at the planned next generation neutrinoless double beta decay experiment SuperNEMO is discussed. Its ability study different isotopes track outgoing electrons provides means discriminate underlying mechanisms for by measuring half-life electron angular energy distributions.
Observing double beta decay with no neutrinos in the final state, would signal existence of lepton number violating processes and hint at neutrino being a Majorana particle. The impressive effort represented by NEMO-3 experiment sets important constraints on mass lepton-number processes.
This paper reports on the development of a technology involving $$^{100}\hbox {Mo}$$ -enriched scintillating bolometers, compatible with goals CUPID, proposed next-generation bolometric experiment to search for neutrinoless double-beta decay. Large mass ( $$\sim 1~\hbox {kg}$$ ), high optical quality, radiopure -containing zinc and lithium molybdate crystals have been produced used develop performance single detector modules based 0.2–0.4 kg bolometers. In particular, energy resolution...
Abstract The $$2\nu 2\beta $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mn>2</mml:mn> <mml:mi>ν</mml:mi> <mml:mi>β</mml:mi> </mml:mrow> </mml:math> decay of $$^{150}\hbox {Nd}$$ <mml:mmultiscripts> <mml:mrow/> <mml:mn>150</mml:mn> </mml:mmultiscripts> <mml:mtext>Nd</mml:mtext> to the first excited 740.5 keV $$0^{+}_{1}$$ <mml:msubsup> <mml:mn>0</mml:mn> <mml:mn>1</mml:mn> <mml:mo>+</mml:mo> </mml:msubsup> level {Sm}$$ <mml:mtext>Sm</mml:mtext> was measured...
Final results of the double $\ensuremath{\beta}$ decay experiment, performed with help low background ${}^{116}{\mathrm{CdWO}}_{4}$ crystal scintillators in Solotvina Underground Laboratory, are presented. In particular, revised half-life value two-neutrino 2\ensuremath{\beta} ${}^{116}\mathrm{Cd}$ has been measured as ${T}_{1/2}^{2\ensuremath{\nu}}{=2.9}_{\ensuremath{-}0.3}^{+0.4}\ifmmode\times\else\texttimes\fi{}{10}^{19}\mathrm{yr},$ and new limit on neutrinoless $2\ensuremath{\beta}$...
The half-life for double-$\ensuremath{\beta}$ decay of $^{150}\mathrm{Nd}$ has been measured by the NEMO-3 experiment at Modane Underground Laboratory. Using 924.7 days data recorded with $36.55$ g $^{150}\mathrm{Nd}$, we $2\ensuremath{\nu}\ensuremath{\beta}\ensuremath{\beta}$ to be ${T}_{1/2}^{2\ensuremath{\nu}}=(9.{11}_{\ensuremath{-}0.22}^{+0.25}(\mathrm{stat}.)\ifmmode\pm\else\textpm\fi{}0.63(\mathrm{syst}.))\ifmmode\times\else\texttimes\fi{}{10}^{18}$ yr. observed limit on neutrinoless...
Zinc molybdate (ZnMoO4) single crystals were grown for the first time by Czochralski method and their luminescence was measured under X ray excitation in temperature range 85-400 K. Properties of ZnMoO4 crystal as cryogenic low scintillator checked time. Radioactive contamination estimated <0.3 mBq/kg (228-Th) 8 (226-Ra). Thanks to simultaneous measurement scintillation light phonon signal, alpha particles can be discriminated from gamma/beta interactions, making this compound extremely...
The NEMO-3 experiment at the Modane Underground Laboratory has investigated double-$\beta$ decay of $^{48}{\rm Ca}$. Using $5.25$ yr data recorded with a $6.99\,{\rm g}$ sample Ca}$, approximately $150$ candidate events have been selected signal-to-background ratio greater than $3$. half-life for two-neutrino Ca}$ measured to be $T^{2\nu}_{1/2}\,=\,[6.4\, ^{+0.7}_{-0.6}{\rm (stat.)} \, ^{+1.2}_{-0.9}{\rm (syst.)}] \times 10^{19}\,{\rm yr}$. A search neutrinoless yields null result and...
The NEMO-3 collaboration reports the half-life of ${}^{150}$Nd via two-neutrino double-beta decay mode to an unprecedented accuracy. For zero-neutrino ${}^{150}$Nd, distinctive signature possible Majorana nature neutrinos, no observations but sets new upper bounds for in various scenarios beyond standard model.
The double-beta decay of $^{116}\mathrm{Cd}$ has been investigated with the help radiopure enriched $^{116}\mathrm{Cd}{\mathrm{WO}}_{4}$ crystal scintillators (mass 1.162 kg) at Gran Sasso underground laboratory. half-life relative to $2\ensuremath{\nu}2\ensuremath{\beta}$ ground state $^{116}\mathrm{Sn}$ was measured highest up-to-date accuracy as ${T}_{1/2}=(2.6{3}_{\ensuremath{-}0.12}^{+0.11})\ifmmode\times\else\texttimes\fi{}{10}^{19}\text{ }\text{ }\mathrm{yr}$. A new improved limit on...
The full data set of the NEMO-3 experiment has been used to measure half-life two-neutrino double beta decay $$^{100}$$ Mo ground state Ru, $$T_{1/2} = \left[ 6.81 \pm 0.01\,\left( \text{ stat }\right) ^{+0.38}_{-0.40}\,\left( syst \right] \times 10^{18}$$ year. two-electron energy sum, single electron spectra and distribution angle between electrons are presented with an unprecedented statistics $$5\times 10^5$$ events a signal-to-background ratio $$\sim $$ 80. Clear evidence for Single...
Abstract We report the measurement of two-neutrino double-beta ( $$2\nu \beta $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mn>2</mml:mn><mml:mi>ν</mml:mi><mml:mi>β</mml:mi><mml:mi>β</mml:mi></mml:mrow></mml:math> ) decay $$^{100}$$ xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msup><mml:mrow /><mml:mn>100</mml:mn></mml:msup></mml:math> Mo to ground state Ru using lithium molybdate $$\hbox {Li}_2^{\;\;100}\hbox {MoO}_4$$...
Double-beta processes play a key role in the exploration of neutrino and weak interaction properties, searches for effects beyond Standard Model. During last half century many attempts were undertaken to search double-beta decay with emission two electrons, especially its neutrinoless mode ($0\nu2β^-$), latter being still not observed. Double-electron capture (2EC) was focus so far because general lower transition probability. However, rate double-electron ($0\nu2$EC) can experience...
Neutrinoless double beta decay (0νββ) is a yet unobserved nuclear process that would demonstrate Lepton number violation, clear evidence of beyond standard model physics. The two neutrino (2νββ) allowed by the and has been measured in numerous experiments. In this Letter, we report measurement 2νββ half-life Mo100 to ground state Ru100 [7.07±0.02(stat)±0.11(syst)]×1018 yr CUPID-Mo experiment. With relative precision ±1.6% most precise date rate Mo100. addition, constrain higher-order...