I. Lomskaya
A5102844110- Neutrino Physics Research
- Dark Matter and Cosmic Phenomena
- Astrophysics and Cosmic Phenomena
- Particle physics theoretical and experimental studies
- Atomic and Subatomic Physics Research
- Particle Detector Development and Performance
- Atmospheric Ozone and Climate
- Radiation Detection and Scintillator Technologies
- Solar and Space Plasma Dynamics
- Nuclear physics research studies
- Gamma-ray bursts and supernovae
- Radioactive Decay and Measurement Techniques
- Neonatal Health and Biochemistry
- Pulsars and Gravitational Waves Research
- Astro and Planetary Science
- Cosmology and Gravitation Theories
- Advanced NMR Techniques and Applications
- Earthquake Detection and Analysis
Princeton University
2022
Kurchatov Institute
2020-2022
Petersburg Nuclear Physics Institute
2018-2022
Gran Sasso Science Institute
2022
Istituto Nazionale di Fisica Nucleare, Sezione di Genova
2022
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Gran Sasso
2022
Johannes Gutenberg University Mainz
2021
Forschungszentrum Jülich
2020
RWTH Aachen University
2020
University of Genoa
2020
We review the physics potential of a next generation search for solar axions: International Axion Observatory (IAXO) . Endowed with sensitivity to discover axion-like particles (ALPs) coupling photons as small gaγ∼ 10−12 GeV−1, or electrons gae∼10−13, IAXO has find QCD axion in 1 meV∼1 eV mass range where it solves strong CP problem, can account cold dark matter Universe and be responsible anomalous cooling observed number stellar systems. At same time, will have enough detect lower axions...
A bstract This article describes BabyIAXO, an intermediate experimental stage of the International Axion Observatory (IAXO), proposed to be sited at DESY. IAXO is a large-scale axion helioscope that will look for axions and axion-like particles (ALPs), produced in Sun, with unprecedented sensitivity. BabyIAXO conceived test all subsystems (magnet, optics detectors) relevant scale final system thus serve as prototype IAXO, but same time fully-fledged physics reach itself, potential discovery....
We present an improved measurement of the carbon-nitrogen-oxygen (CNO) solar neutrino interaction rate at Earth obtained with complete Borexino Phase-III dataset. The measured rate, R_{CNO}=6.7_{-0.8}^{+2.0} counts/(day×100 tonnes), allows us to exclude absence CNO signal about 7σ C.L. correspondent flux is 6.6_{-0.9}^{+2.0}×10^{8} cm^{-2} s^{-1}, taking into account flavor conversion. use new evaluate C and N abundances in Sun respect H abundance for first time neutrinos. Our result...
This paper presents a comprehensive geoneutrino measurement using the Borexino detector, located at Laboratori Nazionali del Gran Sasso (LNGS) in Italy. The analysis is result of 3262.74 days data between December 2007 and April 2019. describes improved techniques optimized selection, which includes enlarged fiducial volume sophisticated cosmogenic veto. reported exposure (1.29±0.05)×1032 protons ×year represents an increase by factor two over previous 2015. By observing...
We report on an improved measurement of the $^{8}\mathrm{B}$ solar neutrino interaction rate with Borexino experiment at Laboratori Nazionali del Gran Sasso. Neutrinos are detected via their elastic scattering electrons in a large volume liquid scintillator. The measured scattered above 3 MeV energy is ${0.223}_{\ensuremath{-}0.016}^{+0.015}(\mathrm{stat}){\text{ }}_{\ensuremath{-}0.006}^{+0.006}(\mathrm{syst})\text{ }\text{ }\mathrm{cpd}/100\text{ }\mathrm{t}$, which corresponds to observed...
Liquid scintillator detectors play a central role in the detection of neutrinos from various sources. In particular, it is only technique used so far for precision spectroscopy sub-MeV solar neutrinos, as demonstrated by Borexino experiment at Gran Sasso National Laboratory Italy. The benefit high light yield, and thus low energy threshold good resolution, comes cost directional information featured water Cherenkov detectors, measuring 8B above few MeV. this paper we provide first...
Abstract Neutrinos emitted in the carbon, nitrogen, oxygen (CNO) fusion cycle Sun are a sub-dominant, yet crucial component of solar neutrinos whose flux has not been measured yet. The Borexino experiment at Laboratori Nazionali del Gran Sasso (Italy) unique opportunity to detect them directly thanks detector’s radiopurity and precise understanding detector backgrounds. We discuss sensitivity CNO neutrinos, which is based on strategies we adopted constrain rates two most relevant background...
Abstract Cosmogenic radio-nuclei are an important source of background for low-energy neutrino experiments. In Borexino, cosmogenic $$^{11}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mrow /> <mml:mn>11</mml:mn> </mml:msup> </mml:math> C decays outnumber solar pep and CNO events by about ten to one. order extract the flux these two species, a highly efficient identification this is mandatory. We present here details most consolidated strategy, used throughout...
This article describes BabyIAXO, an intermediate experimental stage of the International Axion Observatory (IAXO), proposed to be sited at DESY. IAXO is a large-scale axion helioscope that will look for axions and axion-like particles (ALPs), produced in Sun, with unprecedented sensitivity. BabyIAXO conceived test all subsystems (magnet, optics detectors) relevant scale final system thus serve as prototype IAXO, but same time fully-fledged physics reach itself, potential discovery. The...
The precision measurement of $\ensuremath{\beta}$-spectrum shape for $^{210}\mathrm{Bi}$ (historically RaE) has been performed with a spectrometer based on semiconductor Si(Li) detector. This first forbidden nonunique transition the form factor strongly deviated from unity, and knowledge its spectrum would play an important role in low-background physics presence $^{210}\mathrm{Pb}$ background. measured formfactor could be approximated as...
We report the measurement of sub-MeV solar neutrinos through use their associated Cherenkov radiation, performed with Borexino detector at Laboratori Nazionali del Gran Sasso. The is achieved using a novel technique that correlates individual photon hits events to known position Sun. In an energy window between 0.54 0.74 MeV, selected dominant scintillation light, we have measured 10 887_{-2103}^{+2386}(stat)±947(syst) (68% confidence interval) out 19 904 total events. This corresponds...
Axions are a natural consequence of the Peccei-Quinn mechanism, most compelling solution to strong-CP problem. Similar axion-like particles (ALPs) also appear in number possible extensions Standard Model, notably string theories. Both axions and ALPs very well motivated candidates for Dark Matter, addition, they would be copiously produced at sun’s core. A relevant effort during last decade has been CAST experiment CERN, sensitive axion helioscope to-date. The International Axion Observatory...
Abstract A search for resonant absorption of solar axions by $$^{169}\mathrm {Tm}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msup><mml:mrow /><mml:mn>169</mml:mn></mml:msup><mml:mi>Tm</mml:mi></mml:mrow></mml:math> nuclei was carried out. newly developed approach involving low-background cryogenic bolometer based on $$\mathrm {Tm}_{3} \mathrm {Al}_{5} {O}_{12}$$...
The Borexino experiment has recently provided the first direct experimental evidence of sub-dominant CNO-cycle in Sun, which is assumed to be main energy production mechanism heavier stars. a liquid scintillator detector located at Laboratori Nazionali del Gran Sasso, Italy with goal measure solar neutrinos. extreme radiopurity and successful thermal stabilisation have proven valuable assets quest for CNO low abundance neutrinos similarity its spectral shape that \emph{pep} intrinsic...
The search for neutrino events in correlation with several of the most intense fast radio bursts (FRBs) has been performed using Borexino data. We have searched signals visible energies above $250$~keV within a time window $\pm$1000~s corresponding to detection particular FRB. also applied an alternative approach based on searching specific shapes neutrino-electron scattering spectra full exposure spectrum detector. In particular, two incoming were considered: monoenergetic line and expected...
More than 80 years after the postulation of dark matter, its nature remains one fundamental questions in cosmology. Axions are currently leading candidates for hypothetical, non-baryonic matter that is expected to account about 25% energy density Universe. Especially light Large Hadron Collider at CERN slowly closing on Weakly-Interacting Massive Particle (WIMP) searches, axions and axion-like particles (ALPs) provide a viable alternative approach solving problem. The fact makes them...
Abstract The response function of the recoil nuclei in detectors designed for detection neutrinos or dark matter particles can be determined only through usage a neutron source with known energy spectrum. A possible solution compact calibration is combination 252 Cf and semiconductor detector that detects fission fragments, thus records emission moment. This work devoted to degradation study operating parameters silicon irradiated by fragments nuclide Cf. Two types Si were under...
Expected energy spectra calculations for large volume liquid scintillation detectors to inverse $β$-decay antineutrinos produced by $^{144}$Ce -- $^{144}$Pr artificial source have been performed. The were carried out through Monte-Carlo method within GEANT4.10 framework and purposed search neutrino oscillation sterile eigenstate with mass about 1 eV. analysis of relative sensitivity parameters different detector shapes has