PoS - Proceedings of Science
Volume 340 - The 39th International Conference on High Energy Physics (ICHEP2018) - Parallel: Neutrino Physics
Recent results from the MAJORANA DEMONSTRATOR
J. Myslik,* S.I. Alvis, I.J. Arnquist, F.T. Avignone III, A.S. Barabash, C.J. Barton, F.E. Bertrand, T. Bode, B. Bos, V. Brudanin, M. Busch, M. Buuck, T.S. Caldwell, Y.D. Chan, C.D. Christofferson, P.H. Chu, C. Cuesta, J.A. Detwiler, C. Dunagan, Y. Efremenko, H. Ejiri, S.R. Elliott, T. Gilliss, G.K. Giovanetti, M.P. Green, J. Gruszko, I.S. Guinn, V.E. Guiseppe, C.R. Haufe, R.J. Hegedus, L. Hehn, R. Henning, D. Hervas Aguilar, E.W. Hoppe, M.A. Howe, K.J. Keeter, M.F. Kidd, S.I. Konovalov, R.T. Kouzes, A.M. Lopez, R.D. Martin, R. Massarczyk, S.J. Meijer, S. Mertens, G. Othman, W. Pettus, A. Piliounis, A.W.P. Poon, D.C. Radford, J. Rager, A.L. Reine, K. Rielage, N.W. Ruof, B. Shanks, M. Shirchenko, D. Tedeschi, R.L. Varner, S. Vasilyev Vasundhara, B.R. White, J.F. Wilkerson, C. Wiseman, W. Xu, E. Yakushev, C.H. Yu, V. Yumatov, I. Zhitnikov, B.X. Zhu
*corresponding author
Full text: pdf
Published on: August 02, 2019
Abstract
The MAJORANA DEMONSTRATOR is an experiment constructed to search for neutrinoless double-beta decay in $^{76}$Ge and to demonstrate the feasibility to deploy a large-scale experiment in a phased and modular fashion. It consists of two modules of natural and $^{76}$Ge-enriched germanium detectors totalling $44.1\ \mathrm{kg}$, operating at the 4850' level of the Sanford Underground Research Facility in Lead, South Dakota, USA. Commissioning of the experiment began in June 2015, followed by data production with the full detector array in August 2016. The ultra-low background and record energy resolution achieved by the MAJORANA DEMONSTRATOR enable a sensitive neutrinoless double-beta decay search, as well as additional searches for physics beyond the Standard Model. I will discuss the design elements that enable these searches, along with the latest results, focusing on the neutrinoless double-beta decay search. I will also discuss the current status and the future plans of the MAJORANA DEMONSTRATOR, as well as the plans for a future tonne-scale $^{76}$Ge experiment.
DOI: https://doi.org/10.22323/1.340.0635
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