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V. A. Belov

Bio: V. A. Belov is an academic researcher from Kurchatov Institute. The author has contributed to research in topics: Xenon & Physics. The author has an hindex of 23, co-authored 76 publications receiving 2047 citations. Previous affiliations of V. A. Belov include Joint Institute for Nuclear Research & Institute on Taxation and Economic Policy.
Topics: Xenon, Physics, Detector, Scintillation, Neutrino


Papers
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Journal ArticleDOI
TL;DR: The coherent elastic scattering of neutrinos off nuclei has eluded detection for four decades, even though its predicted cross-section is the largest by far of all low-energy neutrino couplings as discussed by the authors.
Abstract: The coherent elastic scattering of neutrinos off nuclei has eluded detection for four decades, even though its predicted cross-section is the largest by far of all low-energy neutrino couplings. This mode of interaction provides new opportunities to study neutrino properties, and leads to a miniaturization of detector size, with potential technological applications. We observe this process at a 6.7-sigma confidence level, using a low-background, 14.6-kg CsI[Na] scintillator exposed to the neutrino emissions from the Spallation Neutron Source (SNS) at Oak Ridge National Laboratory. Characteristic signatures in energy and time, predicted by the Standard Model for this process, are observed in high signal-to-background conditions. Improved constraints on non-standard neutrino interactions with quarks are derived from this initial dataset.

441 citations

Journal ArticleDOI
TL;DR: Results from a search for neutrinoless double-beta decay (0ν ββ) of ^{136}Xe are presented using the first year of data taken with the upgraded EXO-200 detector, with no statistically significant evidence for 0νββ observed.
Abstract: Results from a search for neutrinoless double-beta decay ( 0νββ) of ^(136)Xe are presented using the first year of data taken with the upgraded EXO-200 detector. Relative to previous searches by EXO-200, the energy resolution of the detector has been improved to σ/E = 1.23%, the electric field in the drift region has been raised by 50%, and a system to suppress radon in the volume between the cryostat and lead shielding has been implemented. In addition, analysis techniques that improve topological discrimination between 0νββ and background events have been developed. Incorporating these hardware and analysis improvements, the median 90% confidence level 0νββ half-life sensitivity after combining with the full data set acquired before the upgrade has increased twofold to 3.7 × 10^(25) yr. No statistically significant evidence for 0νββ is observed, leading to a lower limit on the 0νββ half-life of 1.8 × 10^(25) yr at the 90% confidence level.

226 citations

Journal ArticleDOI
TL;DR: In this paper, an improved measurement of the 2νββ half-life performed by EXO-200 is reported, which is the most precisely measured half- life of any 2ν ββ decay to date.
Abstract: We report on an improved measurement of the 2νββ half-life of ^(136)Xe performed by EXO-200. The use of a large and homogeneous time-projection chamber allows for the precise estimate of the fiducial mass used for the measurement, resulting in a small systematic uncertainty. We also discuss in detail the data-analysis methods used for double-β decay searches with EXO-200, while emphasizing those directly related to the present measurement. The ^(136)Xe 2νββ half-life is found to be T^(2νββ)_(1/2) = 2.165±0.016(stat)±0.059(sys)×10^(21) yr. This is the most precisely measured half-life of any 2νββ decay to date.

151 citations

Journal ArticleDOI
TL;DR: In this paper, the DANSS project is aimed at creating a relatively compact neutrino spectrometer which does not contain any flammable or other dangerous liquids and may therefore be located very close to the core of an industrial power reactor.
Abstract: The DANSS project is aimed at creating a relatively compact neutrino spectrometer which does not contain any flammable or other dangerous liquids and may therefore be located very close to the core of an industrial power reactor. As a result, it is expected that high neutrino flux would provide about 15,000 IBD interactions per day in the detector with a sensitive volume of 1 m3. High segmentation of the plastic scintillator will allow to suppress a background down to a ~1% level. Numerous tests performed with a simplified pilot prototype DANSSino under a 3 GWth reactor of the Kalinin NPP have demonstrated operability of the chosen design. The DANSS detector surrounded with a composite shield is movable by means of a special lifting gear, varying the distance to the reactor core in a range from 10 m to 12 m. Due to this feature, it could be used not only for the reactor monitoring, but also for fundamental research including short-range neutrino oscillations to the sterile state. Supposing one-year measurement, the sensitivity to the oscillation parameters is expected to reach a level of sin2(2θnew) ~ 5 × 10−3 with Δ m2 ⊂ (0.02–5.0) eV2.

96 citations


Cited by
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Journal ArticleDOI
Elena Aprile1, Jelle Aalbers2, F. Agostini3, M. Alfonsi4, L. Althueser5, F. D. Amaro6, M. Anthony1, F. Arneodo7, Laura Baudis8, Boris Bauermeister9, M. L. Benabderrahmane7, T. Berger10, P. A. Breur2, April S. Brown2, Ethan Brown10, S. Bruenner11, Giacomo Bruno7, Ran Budnik12, C. Capelli8, João Cardoso6, D. Cichon11, D. Coderre13, Auke-Pieter Colijn2, Jan Conrad9, Jean-Pierre Cussonneau14, M. P. Decowski2, P. de Perio1, P. Di Gangi3, A. Di Giovanni7, Sara Diglio14, A. Elykov13, G. Eurin11, J. Fei15, A. D. Ferella9, A. Fieguth5, W. Fulgione, A. Gallo Rosso, Michelle Galloway8, F. Gao1, M. Garbini3, C. Geis4, L. Grandi16, Z. Greene1, H. Qiu12, C. Hasterok11, E. Hogenbirk2, J. Howlett1, R. Itay12, F. Joerg11, B. Kaminsky13, Shingo Kazama8, A. Kish8, G. Koltman12, H. Landsman12, R. F. Lang17, L. Levinson12, Qing Lin1, Sebastian Lindemann13, Manfred Lindner11, F. Lombardi15, J. A. M. Lopes6, J. Mahlstedt9, A. Manfredini12, T. Marrodán Undagoitia11, Julien Masbou14, D. Masson17, M. Messina7, K. Micheneau14, Kate C. Miller16, A. Molinario, K. Morå9, M. Murra5, J. Naganoma18, Kaixuan Ni15, Uwe Oberlack4, Bart Pelssers9, F. Piastra8, J. Pienaar16, V. Pizzella11, Guillaume Plante1, R. Podviianiuk, N. Priel12, D. Ramírez García13, L. Rauch11, S. Reichard8, C. Reuter17, B. Riedel16, A. Rizzo1, A. Rocchetti13, N. Rupp11, J.M.F. dos Santos6, Gabriella Sartorelli3, M. Scheibelhut4, S. Schindler4, J. Schreiner11, D. Schulte5, Marc Schumann13, L. Scotto Lavina19, M. Selvi3, P. Shagin18, E. Shockley16, Manuel Gameiro da Silva6, H. Simgen11, Dominique Thers14, F. Toschi3, F. Toschi13, Gian Carlo Trinchero, C. Tunnell16, N. Upole16, M. Vargas5, O. Wack11, Hongwei Wang20, Zirui Wang, Yuehuan Wei15, Ch. Weinheimer5, C. Wittweg5, J. Wulf8, J. Ye15, Yanxi Zhang1, T. Zhu1 
TL;DR: In this article, a search for weakly interacting massive particles (WIMPs) using 278.8 days of data collected with the XENON1T experiment at LNGS is reported.
Abstract: We report on a search for weakly interacting massive particles (WIMPs) using 278.8 days of data collected with the XENON1T experiment at LNGS. XENON1T utilizes a liquid xenon time projection chamber with a fiducial mass of (1.30±0.01) ton, resulting in a 1.0 ton yr exposure. The energy region of interest, [1.4,10.6] keVee ([4.9,40.9] keVnr), exhibits an ultralow electron recoil background rate of [82-3+5(syst)±3(stat)] events/(ton yr keVee). No significant excess over background is found, and a profile likelihood analysis parametrized in spatial and energy dimensions excludes new parameter space for the WIMP-nucleon spin-independent elastic scatter cross section for WIMP masses above 6 GeV/c2, with a minimum of 4.1×10-47 cm2 at 30 GeV/c2 and a 90% confidence level.

1,808 citations

Journal ArticleDOI
Elena Aprile1, Jelle Aalbers2, F. Agostini3, M. Alfonsi4, F. D. Amaro5, M. Anthony1, Lior Arazi6, F. Arneodo7, C. Balan5, P. Barrow8, Laura Baudis8, Boris Bauermeister9, Boris Bauermeister4, T. Berger10, P. A. Breur2, Amos Breskin6, April S. Brown2, Ethan Brown10, S. Bruenner11, Giacomo Bruno12, Ran Budnik6, L. Bütikofer13, João Cardoso5, M. Cervantes14, D. Cichon11, D. Coderre13, Auke-Pieter Colijn2, Jan Conrad9, H. Contreras1, Jean-Pierre Cussonneau15, M. P. Decowski2, P. de Perio1, P. Di Gangi3, A. Di Giovanni7, E. Duchovni6, S. Fattori4, A. D. Ferella9, A. Fieguth12, D. Franco8, W. Fulgione, Michelle Galloway8, M. Garbini3, C. Geis4, Luke Goetzke1, Z. Greene1, C. Grignon4, E. K. U. Gross6, W. Hampel11, C. Hasterok11, R. Itay6, Florian Kaether11, B. Kaminsky13, G. Kessler8, A. Kish8, H. Landsman6, R. F. Lang14, D. Lellouch6, L. Levinson6, M. Le Calloch15, C. Levy10, Sebastian Lindemann11, Manfred Lindner11, J. A. M. Lopes5, A. Lyashenko16, S. Macmullin14, A. Manfredini6, T. Marrodán Undagoitia11, Julien Masbou15, F. V. Massoli3, D. Mayani8, A. J. Melgarejo Fernandez1, Y. Meng16, M. Messina1, K. Micheneau15, B. Miguez, A. Molinario, M. Murra12, J. Naganoma17, Uwe Oberlack4, S. E. A. Orrigo5, P. Pakarha8, Bart Pelssers9, R. Persiani15, F. Piastra8, J. Pienaar14, Guillaume Plante1, N. Priel6, L. Rauch11, S. Reichard14, C. Reuter14, A. Rizzo1, S. Rosendahl12, N. Rupp11, J.M.F. dos Santos5, Gabriella Sartorelli3, M. Scheibelhut4, S. Schindler4, Jochen Schreiner11, Marc Schumann13, L. Scotto Lavina15, M. Selvi3, P. Shagin17, Hardy Simgen11, A. Stein16, D. Thers15, A. Tiseni2, G. C. Trinchero, C. Tunnell2, M. von Sivers13, R. Wall17, Hui Wang16, M. Weber1, Yuehuan Wei8, Ch. Weinheimer12, J. Wulf8, Yanxi Zhang1 
TL;DR: In this article, the expected sensitivity of the Xenon1T experiment to the spin-independent WIMP-nucleon interaction cross section was investigated based on Monte Carlo predictions of the electronic and nuclear recoil backgrounds.
Abstract: The XENON1T experiment is currently in the commissioning phase at the Laboratori Nazionali del Gran Sasso, Italy. In this article we study the experiment's expected sensitivity to the spin-independent WIMP-nucleon interaction cross section, based on Monte Carlo predictions of the electronic and nuclear recoil backgrounds. The total electronic recoil background in 1 tonne fiducial volume and (1, 12) keV electronic recoil equivalent energy region, before applying any selection to discriminate between electronic and nuclear recoils, is (1.80 ± 0.15) · 10(−)(4) (kg·day·keV)(−)(1), mainly due to the decay of (222)Rn daughters inside the xenon target. The nuclear recoil background in the corresponding nuclear recoil equivalent energy region (4, 50) keV, is composed of (0.6 ± 0.1) (t·y)(−)(1) from radiogenic neutrons, (1.8 ± 0.3) · 10(−)(2) (t·y)(−)(1) from coherent scattering of neutrinos, and less than 0.01 (t·y)(−)(1) from muon-induced neutrons. The sensitivity of XENON1T is calculated with the Profile Likelihood Ratio method, after converting the deposited energy of electronic and nuclear recoils into the scintillation and ionization signals seen in the detector. We take into account the systematic uncertainties on the photon and electron emission model, and on the estimation of the backgrounds, treated as nuisance parameters. The main contribution comes from the relative scintillation efficiency Script L(eff), which affects both the signal from WIMPs and the nuclear recoil backgrounds. After a 2 y measurement in 1 t fiducial volume, the sensitivity reaches a minimum cross section of 1.6 · 10(−)(47) cm(2) at m(χ) = 50 GeV/c(2).

580 citations

Journal ArticleDOI
Jelle Aalbers1, F. Agostini2, M. Alfonsi3, F. D. Amaro4, Claude Amsler5, Elena Aprile6, Lior Arazi7, F. Arneodo8, P. Barrow9, Laura Baudis1, Laura Baudis9, M. L. Benabderrahmane8, T. Berger10, B. Beskers3, Amos Breskin7, P. A. Breur1, April S. Brown1, Ethan Brown10, S. Bruenner11, Giacomo Bruno, Ran Budnik7, Lukas Bütikofer5, J. Calvén12, João Cardoso4, D. Cichon11, D. Coderre5, Auke-Pieter Colijn1, Jan Conrad12, Jean-Pierre Cussonneau13, M. P. Decowski1, Sara Diglio13, Guido Drexlin14, Ehud Duchovni7, E. Erdal7, G. Eurin11, A. D. Ferella12, A. Fieguth15, W. Fulgione, A. Gallo Rosso, P. Di Gangi2, A. Di Giovanni8, Michelle Galloway9, M. Garbini2, C. Geis3, F. Glueck14, L. Grandi16, Z. Greene6, C. Grignon3, C. Hasterok11, Volker Hannen15, E. Hogenbirk1, J. Howlett6, D. Hilk14, C. Hils3, A. James9, B. Kaminsky5, Shingo Kazama9, Benjamin Kilminster9, A. Kish9, Lawrence M. Krauss17, H. Landsman7, R. F. Lang18, Qing Lin6, F. L. Linde1, Sebastian Lindemann11, Manfred Lindner11, J. A. M. Lopes4, Marrodan T. Undagoitia11, Julien Masbou13, F. V. Massoli2, D. Mayani9, M. Messina6, K. Micheneau13, A. Molinario, K. Morå12, E. Morteau13, M. Murra15, J. Naganoma19, Jayden L. Newstead17, Kaixuan Ni20, Uwe Oberlack3, P. Pakarha9, Bart Pelssers12, P. de Perio6, R. Persiani13, F. Piastra9, M.-C. Piro10, G. Plante6, L. Rauch11, S. Reichard18, A. Rizzo6, N. Rupp11, J.M.F. dos Santos4, G. Sartorelli2, M. Scheibelhut3, S. Schindler3, Marc Schumann21, Marc Schumann5, Jochen Schreiner11, L. Scotto Lavina13, M. Selvi2, P. Shagin19, Miguel Silva4, Hardy Simgen11, P. Sissol3, M. von Sivers5, D. Thers13, J. Thurn22, A. Tiseni1, Roberto Trotta23, C. Tunnell1, Kathrin Valerius14, M. Vargas15, Hongwei Wang24, Yuehuan Wei9, Ch. Weinheimer15, T. Wester22, J. Wulf9, Yanxi Zhang6, T. Zhu9, Kai Zuber22 
TL;DR: DARk matter WImp search with liquid xenoN (DARWIN) as mentioned in this paper is an experiment for the direct detection of dark matter using a multi-ton liquid xenon time projection chamber at its core.
Abstract: DARk matter WImp search with liquid xenoN (DARWIN(2)) will be an experiment for the direct detection of dark matter using a multi-ton liquid xenon time projection chamber at its core. Its primary g ...

553 citations