A. Lubashevskiy
A5039334861- Particle physics theoretical and experimental studies
- Neutrino Physics Research
- Dark Matter and Cosmic Phenomena
- Astrophysics and Cosmic Phenomena
- Particle Detector Development and Performance
- Nuclear physics research studies
- Radiation Detection and Scintillator Technologies
- Atomic and Subatomic Physics Research
- Muon and positron interactions and applications
- High-Energy Particle Collisions Research
- Nuclear Physics and Applications
- Cosmology and Gravitation Theories
- Quantum Chromodynamics and Particle Interactions
- Computational Physics and Python Applications
- Radiation Therapy and Dosimetry
- X-ray Spectroscopy and Fluorescence Analysis
- Nuclear and radioactivity studies
- Electron and X-Ray Spectroscopy Techniques
- Graphite, nuclear technology, radiation studies
- Inorganic Fluorides and Related Compounds
- Color Science and Applications
- Vibration and Dynamic Analysis
- Advanced NMR Techniques and Applications
- Particle Accelerators and Free-Electron Lasers
- Advanced Chemical Physics Studies
Joint Institute for Nuclear Research
2013-2024
Max Planck Institute for Nuclear Physics
2013-2020
Institute for Nuclear Research
2018
Dubna State University
2015-2017
Université Paris-Saclay
2009-2016
University of Milan
2016
Robert Bosch (Germany)
2016
University of Zurich
2016
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Sud
2016
Penn Center for AIDS Research
2016
Neutrinoless double beta decay is a process that violates lepton number conservation. It predicted to occur in extensions of the standard model particle physics. This Letter reports results from phase I Germanium Detector Array (GERDA) experiment at Gran Sasso Laboratory (Italy) searching for neutrinoless isotope $^{76}\mathrm{Ge}$. Data considered present analysis have been collected between November 2011 and May 2013 with total exposure 21.6 kg yr. A blind performed. The background index...
The GERmanium Detector Array (GERDA) experiment searched for the lepton-number-violating neutrinoless double-$\beta$ ($0\nu\beta\beta$) decay of $^{76}$Ge, whose discovery would have far-reaching implications in cosmology and particle physics. By operating bare germanium diodes, enriched an active liquid argon shield, GERDA achieved unprecedently low background index $5.2\times10^{-4}$ counts/(keV$\cdot$kg$\cdot$yr) signal region met design goal to collect exposure 100 kg$\cdot$yr a...
The GERDA experiment searches for the lepton-number-violating neutrinoless double-β decay of ^{76}Ge (^{76}Ge→^{76}Se+2e^{-}) operating bare Ge diodes with an enriched fraction in liquid argon. exposure broad-energy germanium type (BEGe) detectors is increased threefold respect to our previous data release. BEGe feature excellent background suppression from analysis time profile detector signals. In window a level 1.0_{-0.4}^{+0.6}×10^{-3} counts/(keV kg yr) has been achieved; if normalized...
The Gerda collaboration is performing a search for neutrinoless double beta decay of 76Ge with the eponymous detector. experiment has been installed and commissioned at Laboratori Nazionali del Gran Sasso started operation in November 2011. design, construction first operational results are described, along detailed information from R&D phase.
A discovery that neutrinos are not the usual Dirac but Majorana fermions, i.e. identical to their antiparticles, would be a manifestation of new physics with profound implications for particle and cosmology. generate neutrinoless double-$\beta$ ($0\nu\beta\beta$) decay, matter-creating process without balancing emission antimatter. So far, 0$\nu\beta\beta$ decay has eluded detection. The GERDA collaboration searches $0\nu\beta\beta$ $^{76}$Ge by operating bare germanium detectors in an...
A search for neutrinoless $\beta\beta$ decay processes accompanied with Majoron emission has been performed using data collected during Phase I of the GERmanium Detector Array (GERDA) experiment at Laboratori Nazionali del Gran Sasso INFN (Italy). Processes spectral indices n = 1, 2, 3, 7 were searched for. No signals found and lower limits order 10$^{23}$ yr on their half-lives derived, yielding substantially improved results compared to previous experiments $^{76}$Ge. new result half-life...
The GERmanium Detector Array (GERDA) experiment at the Gran Sasso underground laboratory (LNGS) of INFN is searching for neutrinoless double beta decay 76Ge. signature signal a monoenergetic peak 2039 keV, Q-value decay, Q_bb. To avoid bias in search, present analysis does not consider all those events, that fall 40 keV wide region centered around main parameters needed are described. A background model was developed to describe observed energy spectrum. contains several contributions,...
The GERDA experiment located at the LNGS searches for neutrinoless double beta (0\nu\beta\beta) decay of ^{76}Ge using germanium diodes as source and detector. In Phase I eight semi-coaxial five BEGe type detectors have been deployed. latter is used in this field research first time. All are made from material with enriched fraction. experimental sensitivity can be improved by analyzing pulse shape detector signals aim to reject background events. This paper documents algorithms developed...
The ν GeN is new experiment at the Kalinin Nuclear Power Plant (KNPP) for detection of coherent Neutrino–Ge Nucleus elastic scattering. Recent neutrino and Dark Matter search experiments have revolutionized rear events, events with low energies, in particular. Experiments achieved sensitivities on level several per hundred kg detector material day energy thresholds from few eV. This opens up a unique possibility experimental neutrino-nucleus scattering that has been considered to be...
The GERDA collaboration is performing a sensitive search for neutrinoless double beta decay of $^{76}$Ge at the INFN Laboratori Nazionali del Gran Sasso, Italy. upgrade experiment from Phase I to II has been concluded in December 2015. first data release shows that goal suppress background by one order magnitude compared achieved. thus will remain background-free up its design exposure (100 kg yr). It reach thereby half-life sensitivity more than 10$^{26}$ yr within 3 years collection. This...
The GERmanium Detector Array (Gerda) at the Gran Sasso Underground Laboratory (LNGS) searches for neutrinoless double beta decay ( $$0\nu \beta $$ ) of $$^{76}$$ Ge. Germanium detectors made material with an enriched Ge fraction act simultaneously as sources and this decay. During Phase I theexperiment mainly refurbished semi-coaxial from former experiments were used. For upcoming II, 30 new broad energy germanium (BEGe)-type produced. A subgroup these has already been deployed in Gerda...
We present the measurement of two-neutrino double-β decay rate 76Ge performed with GERDA Phase II experiment. With a subset entire exposure, 11.8 kg yr, half-life process has been determined: T2ν1/2=(2.022±0.018stat±0.038syst)×1021 yr. This is most precise determination and one measurements process. The relevant nuclear matrix element can be extracted: M2νeff=(0.101±0.001).Received 13 May 2023Accepted 15 August 2023DOI:https://doi.org/10.1103/PhysRevLett.131.142501Published by American...
The EDELWEISS-II Collaboration has performed a direct search for WIMP dark matter with an array of ten 400 g heat-and-ionization cryogenic detectors equipped interleaved electrodes the rejection near-surface events. Six months continuous operation at Laboratoire Souterrain de Modane have been achieved. observation one nuclear recoil candidate above 20 keV in effective exposure 144 kg d is interpreted terms limits on cross-section spin-independent interactions WIMPs and nucleons. A 1.0×10−7...
The primary goal of the GERmanium Detector Array (Gerda) experiment at Laboratori Nazionali del Gran Sasso INFN is search for neutrinoless double beta decay 76 Ge.High-purity germanium detectors made from material enriched in Ge are operated directly immersed liquid argon, allowing a substantial reduction background with respect to predecessor experiments.The first 5.04 kg•yr data collected Phase I have been analyzed measure half-life neutrinoaccompanied Ge.The observed spectrum energy range...
The $\ensuremath{\nu}\mathrm{GeN}$ experiment is aimed to investigate neutrino properties using antineutrinos from the reactor of Kalinin Nuclear Power Plant. experimental setup located at about 11 meters center 3.1 ${\mathrm{GW}}_{\mathrm{th}}$ core. Scattering detected with low energy threshold high purity germanium detector. Passive and active shieldings are used suppress all kinds backgrounds coming surrounding materials cosmic radiation. description together first results presented....
Abstract The future Ricochet experiment aims at searching for new physics in the electroweak sector by providing a high precision measurement of Coherent Elastic Neutrino-Nucleus Scattering (CENNS) process down to sub-100 eV nuclear recoil energy range. will deploy kg-scale low-energy-threshold detector array combining Ge and Zn target crystals 8.8 m away from 58 MW research reactor core Institut Laue Langevin (ILL) Grenoble, France. Currently, Collaboration is characterizing backgrounds its...
Abstract The νGeN experiment searches for coherent elastic neutrino-nucleus scattering (CEνNS}) at the Kalinin Nuclear Power Plant. A 1.41-kg high-purity low-threshold germanium detector surrounded by active and passive shielding is deployed minimal distance of 11.1 m allowed lifting mechanism from center reactor core, utilizing one highest antineutrino fluxes among competing experiments. direct comparison count rates obtained during reactor-ON reactor-OFF periods with energy threshold 0.29...
An optimized digital shaping filter has been developed for the Gerda experiment which searches neutrinoless double beta decay in $$^{76}$$ Ge. The Phase I energy calibration data have reprocessed and an average improvement of 0.3 keV resolution (FWHM) corresponding to 10 % at $$Q$$ value $$0\nu \beta $$ Ge is obtained. This possible thanks enhanced low-frequency noise rejection this Zero Area Cusp (ZAC) signal filter.
We present the first search for bosonic superweakly interacting massive particles (super-WIMPs) as keV-scale dark matter candidates performed with GERDA experiment. is a neutrinoless double-β decay experiment which operates high-purity germanium detectors enriched in ^{76}Ge an ultralow background environment at Laboratori Nazionali del Gran Sasso (LNGS) of INFN Italy. Searches were pseudoscalar and vector mass region from 60 keV/c^{2} to 1 MeV/c^{2}. No evidence signal was observed, most...
Background coming from the $$^{42}$$ Ar decay chain is considered to be one of most relevant for Gerda experiment, which searches neutrinoless double beta $$^{76}$$ Ge. The sensitivity strongly relies on absence background around Q-value decay. K, a progeny Ar, can contribute that via electrons continuous spectrum with an endpoint at 3.5 MeV. Research and development suppression methods targeting this source were performed low-background test facility LArGe . It was demonstrated by reducing...
A bstract The GERmanium Detector Array (Gerda) experiment at the Gran Sasso underground laboratory (LNGS) of INFN is searching for neutrinoless double-beta (0 νββ ) decay 76 Ge. technological challenge Gerda to operate in a “background-free” regime region interest (ROI) after analysis cuts full 100 kg · yr target exposure experiment. careful modeling and decomposition full-range energy spectrum essential predict shape composition events ROI around Q ββ 0 search, extract precise measurement...