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The NEXT-100 detector will search for the neutrinoless double beta decay of $^{136}$Xe using an electroluminescent high-pressure xenon gas TPC filled with 100 kg of enriched Xe. An observation of this hypothetical process would establish a…

Instrumentation and Detectors · Physics 2019-08-13 D. Lorca

We present results from a search for neutrinoless double-$\beta$ ($0\nu\beta\beta$) decay using 36.6 g of the isotope $^{150}$Nd with data corresponding to a live time of 5.25 y recorded with the NEMO-3 detector. We construct a complete…

We present a proof-of-concept extension to the Standard Model that can generate a non-vanishing neutrinoless double beta decay ($0\nu\beta\beta$) signal without the existence of Majorana neutrinos or lepton number violation in the…

High Energy Physics - Phenomenology · Physics 2024-08-05 Lukáš Gráf , Sudip Jana , Oliver Scholer , Nele Volmer

The observation of neutrinoless double-beta decay would determine whether the neutrino is a Majorana particle and provide information on the absolute scale of neutrino mass. The MAJORANA Collaboration is constructing the DEMONSTRATOR, an…

Searches for double beta decay of $^{134}$Xe were performed with EXO-200, a single-phase liquid xenon detector designed to search for neutrinoless double beta decay of $^{136}$Xe. Using an exposure of $29.6\text{ kg}\!\cdot\!\text{yr}$, the…

EXO-200 was a leading double beta decay experiment consisting of a single-phase, enriched liquid xenon time projection chamber filled with an admixture of 80.672% $^{136}$Xe and 19.098% $^{134}$Xe. The detector operated at WIPP between 2010…

The study of neutrinoless double-beta decay plays a fundamental role in the understanding of neutrino physics. Its observation would prove that neutrinos are Majorana particles and that lepton number is not conserved. Experimental searches…

Nuclear Experiment · Physics 2017-05-12 Sergio Di Domizio

GERDA is an experiment searching for the neutrinoless {\beta}{\beta} decay of Ge-76. The experiment uses an array of high-purity germanium detectors, enriched in Ge-76, directly immersed in liquid argon. GERDA recently started the physics…

Data Analysis, Statistics and Probability · Physics 2012-08-01 P. Zavarise , M. Agostini , A. A. Machado , L. Pandola , O. Volynets

We report the results of a search for the neutrinoless double-$\beta$ decay (0$\nu\beta\beta$) of $^{100}$Mo, using the NEMO-3 detector to reconstruct the full topology of the final state events. With an exposure of 34.7 kg.y, no evidence…

Neutrinoless double beta decay is the only process known so far able to test the neutrino intrinsic nature: its experimental observation would imply that the lepton number is violated by two units and prove that neutrinos have a Majorana…

High Energy Physics - Experiment · Physics 2015-06-22 Alberto Garfagnini

Double beta decay is indispensable to solve the question of the neutrino mass matrix together with $\nu$ oscillation experiments. Recent analysis of the most sensitive experiment since nine years - the HEIDELBERG-MOSCOW experiment in…

High Energy Physics - Phenomenology · Physics 2014-11-17 H. V. Klapdor-Kleingrothaus

The LEGEND experiment, now under construction, will operate a large array of Ge detectors for the search of neutrinoless double-beta decay of $^{76}$Ge. In this paper we report on the process development for the hydrogen reduction of…

Instrumentation and Detectors · Physics 2021-02-03 Kevin-Peter Gradwohl , Oskar Moras , Jozsef Janicskó-Csáthy , Stefan Schönert , R. Radhakrishnan Sumathi

The data of the Heidelberg-Moscow double beta decay experiment for the measuring period August 1990 - May 2000 (54.9813 kg y or 723.44 molyears), published recently, are analyzed using the potential of the Bayesian method for low counting…

High Energy Physics - Phenomenology · Physics 2016-09-06 H. V. Klapdor-Kleingrothaus , A. Dietz , H. L. Harney , I. V. Krivosheina

A search for Beyond the Standard Model double-$\beta$ decay modes of $^{76}$Ge has been performed with data collected during the Phase II of the GERmanium Detector Array (GERDA) experiment, located at Laboratori Nazionali del Gran Sasso of…

Nuclear Experiment · Physics 2022-09-07 The GERDA collaboration , M. Agostini , A. Alexander , G. Araujo , A. M. Bakalyarov , M. Balata , I. Barabanov , L. Baudis , C. Bauer , S. Belogurov , A. Bettini , L. Bezrukov , V. Biancacci , E. Bossio , V. Bothe , R. Brugnera , A. Caldwell , C. Cattadori , A. Chernogorov , T. Comellato , V. D'Andrea , E. V. Demidova , A. Di Giacinto , N. Di Marco , E. Doroshkevich , F. Fischer , M. Fomina , A. Gangapshev , A. Garfagnini , C. Gooch , P. Grabmayr , V. Gurentsov , K. Gusev , J. Hakenmüller , S. Hemmer , W. Hofmann , J. Huang , M. Hult , L. V. Inzhechik , J. Janicskó Csáthy , J. Jochum , M. Junker , V. Kazalov , Y. Kermaïdic , H. Khushbakht , T. Kihm , K. Kilgus , I. V. Kirpichnikov , A. Klimenko , K. T. Knöpfle , O. Kochetov , V. N. Kornoukhov , P. Krause , V. V. Kuzminov , M. Laubenstein , M. Lindner , I. Lippi , A. Lubashevskiy , B. Lubsandorzhiev , G. Lutter , C. Macolino , B. Majorovits , W. Maneschg , L. Manzanillas , G. Marshall , M. Miloradovic , R. Mingazheva , M. Misiaszek , M. Morella , Y. Müller , I. Nemchenok , L. Pandola , K. Pelczar , L. Pertoldi , P. Piseri , A. Pullia , C. Ransom , L. Rauscher , M. Redchuk , S. Riboldi , N. Rumyantseva , C. Sada , S. Sailer , F. Salamida , S. Schönert , J. Schreiner , M. Schütt , A. -K. Schütz , O. Schulz , M. Schwarz , B. Schwingenheuer , O. Selivanenko , E. Shevchik , M. Shirchenko , L. Shtembari , H. Simgen , A. Smolnikov , D. Stukov , A. A. Vasenko , A. Veresnikova , C. Vignoli , K. von Sturm , T. Wester , C. Wiesinger , M. Wojcik , E. Yanovich , B. Zatschler , I. Zhitnikov , S. V. Zhukov , D. Zinatulina , A. Zschocke , A. J. Zsigmond , K. Zuber , G. Zuzel

The Neutrino Experiment with a Xenon TPC (NEXT) searches for the neutrinoless double-beta decay of Xe-136 using high-pressure xenon gas TPCs with electroluminescent amplification. A scaled-up version of this technology with about 1 tonne of…

Instrumentation and Detectors · Physics 2021-02-23 NEXT Collaboration , C. Adams , V. Álvarez , L. Arazi , I. J. Arnquist , C. D. R Azevedo , K. Bailey , F. Ballester , J. M. Benlloch-Rodríguez , F. I. G. M. Borges , N. Byrnes , S. Cárcel , J. V. Carrión , S. Cebrián , E. Church , C. A. N. Conde , T. Contreras , A. A. Denisenko , G. Díaz , J. Díaz , J. Escada , R. Esteve , R. Felkai , L. M. P. Fernandes , P. Ferrario , A. L. Ferreira , F. Foss , E. D. C. Freitas , Z. Freixa , J. Generowicz , A. Goldschmidt , J. J. Gómez-Cadenas , R. González , D. González-Díaz , S. Gosh , R. Guenette , R. M. Gutiérrez , J. Haefner , K. Hafidi , J. Hauptman , C. A. O. Henriques , J. A. Hernando Morata , P. Herrero , V. Herrero , J. Ho , Y. Ifergan , B. J. P. Jones , M. Kekic , L. Labarga , A. Laing , P. Lebrun , N. López-March , M. Losada , R. D. P. Mano , J. Martín-Albo , A. Martínez , M. Martínez-Vara , G. Martínez-Lema , A. D. McDonald , Z. E. Meziani , F. Monrabal , C. M. B. Monteiro , F. J. Mora , J. Muñoz Vidal , C. Newhouse , P. Novella , D. R. Nygren , E. Oblak , B. Palmeiro , A. Para , J. Pérez , M. Querol , A. Redwine , J. Renner , L. Ripoll , I. Rivilla , Y. Rodríguez García , J. Rodríguez , C. Rogero , L. Rogers , B. Romeo , C. Romo-Luque , F. P. Santos , J. M. F. dos Santos , A. Simón , M. Sorel , C. Stanford , J. M. R. Teixeira , P. Thapa , J. F. Toledo , J. Torrent , A. Usón , J. F. C. A. Veloso , T. T. Vuong , R. Webb , R. Weiss-Babai , J. T. White , K. Woodruff , N. Yahlali

A new search for two-neutrino double-beta ($2\nu\beta\beta$) decay of $^{136}\rm Xe$ to the $0^+_1$ excited state of $^{136}\rm Ba$ is performed with the full EXO-200 dataset. A deep learning-based convolutional neural network is used to…

SNO+ is a large multipurpose neutrino detector situated 2km underground at SNOLAB in Sudbury, Canada. It reuses the structure of the SNO experiment with numerous infrastructure upgrades and with heavy water replaced by ultra-pure liquid…

High Energy Physics - Experiment · Physics 2019-04-03 Josephine Paton

Neutrinoless double-$\beta$ decay of $^{76}$Ge is searched for with germanium detectors where source and detector of the decay are identical. For the success of future experiments it is important to increase the mass of the detectors. We…

Instrumentation and Detectors · Physics 2021-06-29 GERDA collaboration , M. Agostini , G. R. Araujo , A. M. Bakalyarov , M. Balata , I. Barabanov , L. Baudis , C. Bauer , E. Bellotti , S. Belogurov , A. Bettini , L. Bezrukov , V. Biancacci , E. Bossio , V. Bothe , V. Brudanin , R. Brugnera , A. Caldwell , C. Cattadori , A. Chernogorov , T. Comellato , V. D'Andrea , E. V. Demidova , N. Di Marco , E. Doroshkevich , F. Fischer , M. Fomina , A. Gangapshev , A. Garfagnini , C. Gooch , P. Grabmayr , V. Gurentsov , K. Gusev , J. Hakenmüller , S. Hemmer , W. Hofmann , J. Huang , M. Hult , L. V. Inzhechik , J. Janicskó Csáthy , J. Jochum , M. Junker , V. Kazalov , Y. Kermaïdic , H. Khushbakht , T. Kihm , I. V. Kirpichnikov , A. Klimenko , R. Kneißl , K. T. Knöpfle , O. Kochetov , V. N. Kornoukhov , P. Krause , V. V. Kuzminov , M. Laubenstein , M. Lindner , I. Lippi , A. Lubashevskiy , B. Lubsandorzhiev , G. Lutter , C. Macolino , B. Majorovits , W. Maneschg , L. Manzanillas , M. Miloradovic , R. Mingazheva , M. Misiaszek , P. Moseev , Y. Müller , I. Nemchenok , L. Pandola , K. Pelczar , L. Pertoldi , P. Piseri , A. Pullia , C. Ransom , L. Rauscher , S. Riboldi , N. Rumyantseva , C. Sada , F. Salamida , S. Schönert , J. Schreiner , M. Schütt , A. -K. Schütz , O. Schulz , M. Schwarz , B. Schwingenheuer , O. Selivanenko , E. Shevchik , M. Shirchenko , L. Shtembari , H. Simgen , A. Smolnikov , D. Stukov , A. A. Vasenko , A. Veresnikova , C. Vignoli , K. von Sturm , T. Wester , C. Wiesinger , M. Wojcik , E. Yanovich , B. Zatschler , I. Zhitnikov , S. V. Zhukov , D. Zinatulina , A. Zschocke , A. J. Zsigmond , K. Zuber , G. Zuzel

The MAJORANA DEMONSTRATOR recently concluded its search for neutrinoless double-beta decay. The experiment operated an array of up to 40.4 kg of germanium detectors, 27 kg of which were isotopically enriched in 76Ge and housed inside a…

Nuclear Experiment · Physics 2024-01-11 David J. Tedeschi
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