A5106483355- Neutrino Physics Research
- Particle physics theoretical and experimental studies
- Astrophysics and Cosmic Phenomena
- Dark Matter and Cosmic Phenomena
- Radiation Detection and Scintillator Technologies
- Particle Detector Development and Performance
- Nuclear physics research studies
- Particle accelerators and beam dynamics
- Nuclear Physics and Applications
- Muon and positron interactions and applications
- Gamma-ray bursts and supernovae
- Planetary Science and Exploration
- Atomic and Subatomic Physics Research
- Radioactive Decay and Measurement Techniques
- Superconducting Materials and Applications
- Quantum, superfluid, helium dynamics
- Scientific Research and Discoveries
- Particle Accelerators and Free-Electron Lasers
- Noncommutative and Quantum Gravity Theories
- Thermochemical Biomass Conversion Processes
- Solar and Space Plasma Dynamics
- Iron and Steelmaking Processes
- Advanced NMR Techniques and Applications
- Chemical and Physical Properties of Materials
- Cosmology and Gravitation Theories
The University of Tokyo
2021-2024
Stony Brook University
2016-2024
State University of New York
2016-2024
LIP - Laboratory of Instrumentation and Experimental Particle Physics
2023-2024
University of Minnesota
2024
European Organization for Nuclear Research
2021-2023
Colorado State University
2023
University of Bern
2023
Albert Einstein College of Medicine
2023
Eötvös Loránd University
2023
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.
Abstract New developments in liquid scintillators, high-efficiency, fast photon detectors, and chromatic sorting have opened up the possibility for building a large-scale detector that can discriminate between Cherenkov scintillation signals. Such could reconstruct particle direction species using light while also having excellent energy resolution low threshold of scintillator detector. Situated deep underground, utilizing new techniques computing reconstruction, this achieve unprecedented...
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.
We report the results of a search for neutrinoless double-$\ensuremath{\beta}$ decay ($0\ensuremath{\nu}\ensuremath{\beta}\ensuremath{\beta}$) $^{100}\mathrm{Mo}$, using NEMO-3 detector to reconstruct full topology final state events. With an exposure $34.7\text{ }\text{ }\mathrm{kg}\ifmmode\cdot\else\textperiodcentered\fi{}\mathrm{y}$, no evidence $0\ensuremath{\nu}\ensuremath{\beta}\ensuremath{\beta}$ signal has been found, yielding limit light Majorana neutrino mass mechanism...
Using data from the NEMO-3 experiment, we have measured two-neutrino double beta decay ( $$2\nu \beta $$ ) half-life of $$^{82}$$ Se as $$T_{\smash {1/2}}^{2\nu } \!=\! \left[ 9.39 \pm 0.17\left( \text{ stat }\right) 0.58\left( syst \right] \times 10^{19}$$ y under single-state dominance hypothesis for this nuclear transition. The corresponding matrix element is $$\left| M^{2\nu }\right| = 0.0498 0.0016$$ . In addition, a search neutrinoless $$0\nu using 0.93 kg observed total 5.25 has been...
The NEMO-3 experiment measured the half-life of $2\ensuremath{\nu}\ensuremath{\beta}\ensuremath{\beta}$ decay and searched for $0\ensuremath{\nu}\ensuremath{\beta}\ensuremath{\beta}$ $^{116}\mathrm{Cd}$. Using 410 g $^{116}\mathrm{Cd}$ installed in detector with an exposure 5.26 y, ($4968\ifmmode\pm\else\textpm\fi{}74$) events corresponding to ground state $^{116}\mathrm{Sn}$ have been observed a signal background ratio about 12. has be...
SuperNEMO is a double-$\beta$ decay experiment, which will employ the successful tracker-calorimeter technique used in recently completed NEMO-3 experiment. implement 100 kg of isotope, reaching sensitivity to neutrinoless ($0\nu\beta\beta$) half-life order $10^{26}$ yr, corresponding Majorana neutrino mass 50-100 meV. One main goals and challenges detector development programme has been reach calorimeter energy resolution, $\Delta$E/E, around 3%/$sqrt(E)$(MeV) $\sigma$, or 7%/$sqrt(E)$(MeV)...
The BiPo-3 detector, running at the Canfranc Underground Laboratory (Laboratorio Subterr'aneo de Canfranc, LSC, Spain) since 2013, is a low-radioactivity detector dedicated to measuring ultra low natural radionuclide contaminations of 208Tl (232Th chain) and 214Bi (238U in thin materials. total sensitive surface area 3.6 m2. has been developed measure radiopurity selenium double β-decay source foils SuperNEMO experiment. In this paper design performance results background measurements...
We report the results of a first experimental search for lepton number violation by four units in neutrinoless quadruple-$\beta$ decay $^{150}$Nd using total exposure $0.19$ kg$\cdot$y recorded with NEMO-3 detector at Modane Underground Laboratory (LSM). find no evidence this and set lower limits on half-life range $T_{1/2}>(1.1-3.2)\times10^{21}$ y $90\%$ CL, depending model used kinematic distributions emitted electrons.
Fluidized bed gasification processes are generally considered a good choice for biomass and waste because of its fuel flexibility. Furthermore, it is relatively low-temperature highly efficient process operating at 700–900°C compared with, example, coal-based entrained flow that mostly operate 1400–1600°C. Indirect fluidized becoming increasingly popular some applications due to the possibility producing N2-free gas without need an air separation unit, as well complete conversion fuel. ECN...
The SuperNEMO experiment will search for neutrinoless double-beta decay (0νββ), and study the Standard-Model process (2νββ). technology can measure energy of each electrons produced in a (ββ) decay, reconstruct topology their individual tracks. spectrum requires very accurate calibration to be carried out periodically. Demonstrator Module calibrated using 42 sources, consisting droplet 207Bi within frame assembly. quality these which depends upon entire ^207Bi being contained frame, is key...
The NEMO-3 detector, which had been operating in the Modane Underground Laboratory from 2003 to 2010, was designed search for neutrinoless double $β$ ($0νββ$) decay. We report final results of a $0νββ$ decays with $6.914$ kg $^{100}$Mo using entire data set detector live time $4.96$ yr, corresponds an exposure 34.3 kg$\cdot$yr. perform detailed study expected background signal region and find no evidence data. level observed $[2.8-3.2]$ MeV is $0.44 \pm 0.13$ counts/yr/kg, events are...
Our understanding of neutrinos faces limitations from neutrino-nucleus interaction uncertainties. Constraining the uncertainties has proven challenging given absence a complete model. To bypass most uncertainties, DUNE physics program named PRISM employs data-driven approach to measure neutrino oscillations. It involves near detector (ND) moving off beam axis sample various energy spectra which are then linearly combined predict far oscillated spectrum. However, still affect oscillation...
The NEMO-3 experiment is an dedicated to the search for neutrinoless double β decay (0νββ). Detection of 0νββ would be direct evidence that neutrinos are Majorana particles and lepton number violated. In NEMO-3, separation source isotopes from active detector region allows reconstruction full event topology, which aids in background suppression investigation underlying mechanisms. has investigated a total seven isotopes, 100Mo, 82Se, 116Cd, 150Nd, 48Ca, 96Zr, 130Te, produced world's best...
SuperNEMO is an experiment currently in the construction phase with aim of searching for neutrinoless double beta decay, a beyond standard model lepton number violating process. It employs same strategy as its predecessor NEMO-3, tracker and calorimeter surrounding thin foil source isotope. Twenty modules are planned, yielding 100 kg 82Se source, sensitivity to half-life 1026 years. The first module intended demonstrate very stringent radiopurity requirements, no background counts being...
Large water Cherenkov detectors have shaped our current knowledge of neutrino physics and nucleon decay, will continue to do so in the foreseeable future. These highly capable allow for directional topological, as well calorimetric information be extracted from signals on their photosensors. The state-of-the-art approach reconstruction relies maximum-likelihood estimation, with several simplifying assumptions employed make problem tractable. In this paper, we describe neural networks that...
Neutrinoless double-β decay is a powerful probe of lepton number violating processes that may arise from Majorana terms in neutrino masses, or supersymmetric, left-right symmetric, and other extensions the Standard Model. Of candidate isotopes for observation this process, 48Ca has highest Qββ-value, resulting decays with energies significantly above most naturally occurring backgrounds. The nucleus also lends itself to precise matrix element calculations within nuclear shell model. We...