The large enriched germanium experiment for neutrinoless double beta decay (LEGEND)

N. Abgrall, A. Abramov, N. Abrosimov, I. Abt, M. Agostini, M. Agartioglu, A. Ajjaq, S. I. Alvis, F. T. Avignone, X. Bai, M. Balata, I. Barabanov, A. S. Barabash, P. J. Barton, L. Baudis, L. Bezrukov, T. Bode, A. Bolozdynya, D. Borowicz, A. BostonH. Boston, S. T.P. Boyd, R. Breier, V. Brudanin, R. Brugnera, M. Busch, M. Buuck, A. Caldwell, T. S. Caldwell, T. Camellato, M. Carpenter, C. Cattadori, J. Cederkäll, Y. D. Chan, S. Chen, A. Chernogorov, C. D. Christofferson, P. H. Chu, R. J. Cooper, C. Cuesta, E. V. Demidova, Z. Deng, M. Deniz, J. A. Detwiler, N. Di Marco, A. Domula, Q. Du, Yu Efremenko, V. Egorov, S. R. Elliott, D. Fields, F. Fischer, A. Galindo-Uribarri, A. Gangapshev, A. Garfagnini, T. Gilliss, M. Giordano, G. K. Giovanetti, M. Gold, P. Golubev, C. Gooch, P. Grabmayr, M. P. Green, J. Gruszko, I. S. Guinn, V. E. Guiseppe, V. Gurentsov, Y. Gurov, K. Gusev, J. Hakenmüeller, L. Harkness-Brennan, Z. R. Harvey, C. R. Haufe, L. Hauertmann, D. Heglund, L. Hehn, A. Heinz, R. Hiller, J. Hinton, R. Hodak, W. Hofmann, S. Howard, M. A. Howe, M. Hult, L. V. Inzhechik, J. Janicskó Csáthy, R. Janssens, M. Ješkovský, J. Jochum, H. T. Johansson, D. Judson, M. Junker, J. Kaizer, K. Kang, V. Kazalov, Y. Kermadic, F. Kiessling, A. Kirsch, A. Kish, A. Klimenko, K. T. Knöpfle, O. Kochetov, S. I. Konovalov, I. Kontul, V. N. Kornoukhov, T. Kraetzschmar, K. Kröninger, A. Kumar, V. V. Kuzminov, K. Lang, M. Laubenstein, A. Lazzaro, Y. L. Li, Y. Y. Li, H. B. Li, S. T. Lin, M. Lindner, I. Lippi, S. K. Liu, X. Liu, J. Liu, D. Loomba, A. Lubashevskiy, B. Lubsandorzhiev, G. Lutter, H. Ma, B. Majorovits, F. Mamedov, R. D. Martin, R. Massarczyk, J. A.J. Matthews, N. McFadden, D. M. Mei, H. Mei, S. J. Meijer, D. Mengoni, S. Mertens, W. Miller, M. Miloradovic, R. Mingazheva, M. Misiaszek, P. Moseev, J. Myslik, I. Nemchenok, T. Nilsson, P. Nolan, C. O'Shaughnessy, G. Othman, K. Panas, L. Pandola, L. Papp, K. Pelczar, D. Peterson, W. Pettus, A. W.P. Poon, P. P. Povinec, A. Pullia, X. C. Quintana, D. C. Radford, J. Rager, C. Ransom, F. Recchia, A. L. Reine, S. Riboldi, K. Rielage, S. Rozov, N. W. Rouf, E. Rukhadze, N. Rumyantseva, R. Saakyan, E. Sala, F. Salamida, V. Sandukovsky, G. Savard, S. Schönert, A. K. Schütz, O. Schulz, M. Schuster, B. Schwingenheuer, O. Selivanenko, B. Sevda, B. Shanks, E. Shevchik, M. Shirchenko, F. Simkovic, L. Singh, V. Singh, M. Skorokhvatov, K. Smolek, A. Smolnikov, A. Sonay, M. Spavorova, I. Stekl, D. Stukov, D. Tedeschi, J. Thompson, T. Van Wechel, R. L. Varner, A. A. Vasenko, S. Vasilyev, A. Veresnikova, K. Vetter, K. Von Sturm, K. Vorren, M. Wagner, G. J. Wang, D. Waters, W. Z. Wei, T. Wester, B. R. White, C. Wiesinger, J. F. Wilkerson, M. Willers, C. Wiseman, M. Wojcik, H. T. Wong, J. Wyenberg, W. Xu, E. Yakushev, G. Yang, C. H. Yu, Q. Yue, V. Yumatov, J. Zeman, Z. Zeng, I. Zhitnikov, B. Zhu, D. Zinatulina, A. Zschocke, A. J. Zsigmond, K. Zuber, G. Zuzel

    Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceedingpeer-review

    Abstract

    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 discovery-capable experiment covering the inverted ordering region, with effective Majorana neutrino masses of 15 - 50 meV, will require a tonne-scale experiment with excellent energy resolution and extremely low backgrounds, at the level of ∼0.1 count /(FWHM·t·yr) in the region of the signal. The current generation 76Ge experiments GERDA and the Majorana Demonstrator, utilizing high purity Germanium detectors with an intrinsic energy resolution of 0.12%, have achieved the lowest backgrounds by over an order of magnitude in the 0νββ signal region of all 0νββ experiments. Building on this success, the LEGEND collaboration has been formed to pursue a tonne-scale 76Ge experiment. The collaboration aims to develop a phased 0νββ experimental program with discovery potential at a half-life approaching or at 1028 years, using existing resources as appropriate to expedite physics results.

    Original languageEnglish
    Title of host publicationWorkshop on Calculation of Double-Beta-Decay Matrix Elements, MEDEX 2017
    PublisherAmerican Institute of Physics (AIP)
    Volume1894
    ISBN (Electronic)9780735415775
    DOIs
    Publication statusPublished - 2017 Oct 16
    Event11th Workshop on Calculation of Double-Beta-Decay Matrix Elements, MEDEX 2017 - Prague, Czech Republic
    Duration: 2017 May 292017 Jun 2

    Conference

    Conference11th Workshop on Calculation of Double-Beta-Decay Matrix Elements, MEDEX 2017
    Country/TerritoryCzech Republic
    CityPrague
    Period2017/05/292017/06/02

    Subject classification (UKÄ)

    • Subatomic Physics

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