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 generation76Ge 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-scale76Ge experiment. The collaboration aims to develop a phased 0νββ experimental program with discovery potential at a half-life approaching or at 1028years, using existing resources as appropriate to expedite physics results.

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. Boston, H. 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.-. Chan, S. Chen, A. Chernogorov, C.D. Christofferson, P.-. Chu, R.J. Cooper, C. Cuesta, E.V. Demidova, Z. Deng, M. Deniz, J.A. Detwiler, N. Di Marco, A. Domula, Q. Du, Y. 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.J. 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.-. 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.-. 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.-. 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.-. Wang, D. Waters, W.-. 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.-. Yu, Q. Yue, V. Yumatov, J. Zeman, Z. Zeng, I. Zhitnikov, B. Zhu, D. Zinatulina, A. Zschocke, A.J. Zsigmond, K. Zuber, G. Zuzel (AIP CONFERENCE PROCEEDINGS). - In: Workshop on calculation of double-beta-decay matrix elements (MEDEX’17)[s.l] : AIP, 2017. - ISBN 9780735415775. - pp. 1-6 (( Intervento presentato al 11. convegno Workshop on Calculation of Double-Beta-Decay Matrix Elements (MEDEX) tenutosi a Prague nel 2017 [10.1063/1.5007652].

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

A. Pullia;S. Riboldi;
2017

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 generation76Ge 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-scale76Ge experiment. The collaboration aims to develop a phased 0νββ experimental program with discovery potential at a half-life approaching or at 1028years, using existing resources as appropriate to expedite physics results.
Physics and Astronomy (all)
Settore FIS/01 - Fisica Sperimentale
Settore FIS/04 - Fisica Nucleare e Subnucleare
Book Part (author)
File in questo prodotto:
File Dimensione Formato  
1709.01980.pdf

accesso aperto

Tipologia: Pre-print (manoscritto inviato all'editore)
Dimensione 395.36 kB
Formato Adobe PDF
395.36 kB Adobe PDF Visualizza/Apri
Pubblicazioni consigliate

Caricamento pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2434/557442
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 133
  • ???jsp.display-item.citation.isi??? 98
social impact