Background-free search for neutrinoless double-β decay of 76Ge with GERDA

  title={Background-free search for neutrinoless double-$\beta$ decay of 76Ge with GERDA},
  author={Matteo Agostini and M. Allardt and A. M. Bakalyarov and M Balata and Igor I. Barabanov and L. Baudis and Christian Bauer and Enrico Bellotti and Sergey Belogurov and S. T. Belyaev and G. Benato and Alessandro Bettini and L. Bezrukov and Tobias Bode and Dorota Maria Borowicz and Viktor Brudanin and R. Brugnera and Allen Caldwell and C. Cattadori and A. I. Chernogorov and Valerio D’Andrea and Elizaveta V. Demidova and Nicola Di Marco and Assunta di Vacri and Alexander R. Domula and Evgeny Doroshkevich and V. G. Egorov and R. Falkenstein and O. Fedorova and K. Freund and N. Frodyma and Albert Gangapshev and A. Garfagnini and C. Gooch and P. Grabmayr and V. I. Gurentsov and K. Gusev and J. Hakenm{\"u}ller and Alex Hegai and Mark Heisel and Sabine Hemmer and Wilhelm Hofmann and M. Hult and L. V. Inzhechik and J. Janicsk{\'o} Cs{\'a}thy and Josef Jochum and Markus Junker and Vladimir Kazalov and Th. Kihm and I. V. Kirpichnikov and Andreas Kirsch and Alexander Kish and A. A. Klimenko and R. Kneissl and K. T. Kn{\"o}pfle and O. I. Kochetov and V. N. Kornoukhov and V. V. Kuzminov and Matthias Laubenstein and Antonio Di Lazzaro and V. I. Lebedev and Bjoern Lehnert and Hongbo Liao and Manfred Lindner and Ivano Lippi and A. V. Lubashevskiy and Bayarto Lubsandorzhiev and G. Lutter and Carla Macolino and B{\'e}la Majorovits and W. Maneschg and Eduardo Medinaceli and Michael Miloradovic and Rizalina Mingazheva and M. Misiaszek and P. S. Moseev and I. B. Nemchenok and Dimitrios Palioselitis and K. Panas and Luciano Pandola and Krzysztof Pelczar and Antonio Pullia and Stefano Riboldi and N. S. Rumyantseva and Cinzia Sada and Francesco Salamida and M. Salathe and Christopher Schmitt and Basil Schneider and Stefan Sch{\"o}nert and Jochen Schreiner and O. Schulz and Anne Kathrin Sch{\"u}tz and Bernhard Schwingenheuer and O. Selivanenko and E. A. Shevchik and M. V. Shirchenko and Hardy Simgen and Anatoly A. Smolnikov and L. Stanco and Laura Vanhoefer and A. A. Vasenko and A. Veresnikova and K. von Sturm and Victoria Wagner and Marc Walter and Annemarie Wegmann and Thomas Wester and Christoph Wiesinger and M. Wojcik and E. A. Yanovich and Igor Zhitnikov and S. V. Zhukov and Daniya Zinatulina and Kai Zuber and Grzegorz Zuzel},
Many extensions of the Standard Model of particle physics explain the dominance of matter over antimatter in our Universe by neutrinos being their own antiparticles. This would imply the existence of neutrinoless double-β decay, which is an extremely rare lepton-number-violating radioactive decay process whose detection requires the utmost background suppression. Among the programmes that aim to detect this decay, the GERDA Collaboration is searching for neutrinoless double-β decay of 76Ge by… 
The large enriched germanium experiment for neutrinoless double beta decay (LEGEND)
The observation of neutrinoless double-beta decay (0νββ) would show that lepton number is violated, reveal that neu-trinos are Majorana particles, and provide information on neutrino mass. A
Contributed Review: The saga of neutrinoless double beta decay search with TeO2 thermal detectors.
This work reviews the long chain of bolometric experiments based on TeO2 crystals that were and continue to be carried out at the Laboratori Nazionali del Gran Sasso, searching for 0νββ of 130Te, and describes the several steps that led to the CUORE detector.
Final Results of GERDA on the Search for Neutrinoless Double-β Decay.
The GERmanium Detector Array (GERDA) experiment searched for the lepton-number-violating neutrinoless double-β (0νββ) decay of ^{76}Ge, whose discovery would have far-reaching implications in
Search for 0νββ-decay with gerda phase II
The Gerda experiment is designed to search for neutrinoless double beta decay of 76Ge. From data taken during Phase I of the experiment some knowledge on background contributions important for future
Neutrinoless Double Beta Decay with Germanium Detectors: 1026 yr and Beyond
In the global landscape of neutrinoless double beta (0νββ) decay search, the use of semiconductor germanium detectors provides many advantages. The excellent energy resolution, the negligible
Searching for neutrinoless double-beta decay with GERDA
  • G. C. M. Agostini, A. Bakalyarov, G. Zuzel
  • Physics
    Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
  • 2020
Search for neutrinoless double beta decay with GERDA phase II
The GERmanium Detector Array (gerda) experiment, located at the Gran Sasso underground laboratory in Italy, is one of the leading experiments for the search of 0νββ decay. In Phase II of the
Search for Neutrinoless Double-Beta Decay with the Upgraded EXO-200 Detector.
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.
Development of Pulse Shape Discrimination Methods as Tools for Background Suppression in High Purity Germanium Detectors used in theGERDA Experiment
Neutrinoless double beta decay experiments are well recognized as the most powerful probes of the nature of the neutrinos (whether they are Dirac or Majorana particles), their absolute mass scale and


Results on neutrinoless double-β decay of 76Ge from phase I of the GERDA experiment.
The results from phase I of the Germanium Detector Array (GERDA) experiment at the Gran Sasso Laboratory (Italy) searching for neutrinoless double beta decay of the isotope (76)Ge are reported.
Searching for Neutrinoless Double-Beta Decay of130Te with CUORE
Neutrinoless double-beta (0) decay is a hypothesized lepton-number-violating process that offers the only known means of asserting the possible Majorana nature of neutrino mass. The Cryogenic
Search for Majorana neutrinos with the first two years of EXO-200 data
New results from EXO-200 based on a large 136Xe exposure are reported, finding no statistically significant evidence for 0νββ decay and set a half-life limit of 1.1 × 1025 years at the 90 per cent confidence level.
Search for the neutrinoless double ß-decay in Gerda Phase I using a Pulse Shape Discrimination technique
The Germanium Detector Array (Gerda) experiment, located underground at the INFN Laboratori Nazionali del Gran Sasso (LNGS) in Italy, deploys high-purity germanium detectors to search for the
Sensitivity of NEXT-100 to neutrinoless double beta decay
A bstractNEXT-100 is an electroluminescent high-pressure xenon gas time projection chamber that will search for the neutrinoless double beta (0νββ) decay of 136Xe. The detector possesses two features
Search for Neutrinoless Double-Beta Decay of (130)Te with CUORE-0.
The search for neutrinoless double-beta decay in a 9.8 kg yr exposure of (130)Te using a bolometric detector array, CUORE-0, finds no evidence and places a Bayesian lower bound on the decay half-life, T(1/2)(0ν)>2.7×10(24)  yr at 90% C.L.
Search for Majorana Neutrinos Near the Inverted Mass Hierarchy Region with KamLAND-Zen.
An improved search for neutrinoless double-beta (0νββ) decay of ^{136}Xe in the KamLAND-Zen experiment is presented and a significant reduction of the xenon-loaded liquid scintillator contaminant identified in previous searches is achieved.
Upgrade of the GERDA Experiment
An overview of the present upgrade for Phase II where both background index and sensitivity shall be improved by about another order of magnitude is given.