/ Instrumentation

Status of the MAJORANA DEMONSTRATOR: A search for neutrinoless double-beta decay

Efremenko, Yu. (Tennessee U.) ; Abgrall, N. (LBNL, NSD) ; Arnquist, I.J. (PNL, Richland) ; Avignone, F.T. (Oak Ridge) ; Baldenegro-Barrera, C.X. (Oak Ridge) ; Barabash, A.S. (Moscow, ITEP) ; Bertrand, F.E. (Oak Ridge) ; Bradley, A.W. (LBNL, NSD) ; Brudanin, V. (Dubna, JINR) ; Busch, M. (TUNL, Durham) ; Buuck, M. (Washington U., Seattle) ; Byram, D. (South Dakota U.) ; Caldwell, A.S. (South Dakota Sch. Mines Tech.) ; Chan, Y.D. (LBNL, NSD) ; Christofferson, C.D. (South Dakota Sch. Mines Tech.) ; Cuesta, C. (Washington U., Seattle) ; Detwiler, J.A. (Washington U., Seattle) ; Ejiri, H. (Osaka U., Res. Ctr. Nucl. Phys.) ; Elliott, S.R. (Los Alamos) ; Galindo-Uribarri, A. (Oak Ridge) ; Gilliss, T. (North Carolina U.) ; Giovanetti, G.K. (North Carolina U.) ; Goett, J. (Los Alamos) ; Green, M.P. (Oak Ridge) ; Gruszko, J. (Washington U., Seattle) ; Guinn, I. (Washington U., Seattle) ; Guiseppe, V.E. (South Carolina U.) ; Henning, R. (North Carolina U.) ; Hoppe, E.W. (PNL, Richland) ; Howard, S. (South Dakota Sch. Mines Tech.) ; Howe, M.A. (North Carolina U.) ; Jasinski, B.R. (South Dakota U.) ; Keeter, K.J. (Black Hills State U.) ; Kidd, M.F. (Tennessee Tech. U.) ; Konovalov, S.I. (Moscow, ITEP) ; Kouzes, R.T. (PNL, Richland) ; Laferriere, B.D. (PNL, Richland) ; Leon, J. (Washington U., Seattle) ; Macmullin, J. (North Carolina U.) ; Martin, R.D. (South Dakota U.) ; Meijer, S.J. (North Carolina U.) ; Mertens, S. (LBNL, NSD) ; Orrell, J.L. (PNL, Richland) ; O'Shaughnessy, C. (North Carolina U.) ; Poon, A.W.P. (LBNL, NSD) ; Radford, D.C. (Oak Ridge) ; Rager, J. (North Carolina U.) ; Rielage, K. (Los Alamos) ; Robertson, R.G.H. (Washington U., Seattle) ; Romero-Romero, E. (Oak Ridge) ; Shanks, B. (North Carolina U.) ; Shirchenko, M. (Dubna, JINR) ; Snyder, N. (South Dakota U.) ; Suriano, A.M. (South Dakota Sch. Mines Tech.) ; Tedeschi, D. (South Carolina U.) ; Trimble, J.E. (North Carolina U.) ; Varner, R.L. (Oak Ridge) ; Vasilyev, S. (Dubna, JINR) ; Vetter, K. (LBNL, NSD) ; Vorren, K. (North Carolina U.) ; White, B.R. (Oak Ridge) ; Wilkerson, J.F. (North Carolina U.) ; Wiseman, C. (South Carolina U.) ; Xu, W. (Los Alamos) ; Yakushev, E. (Dubna, JINR) ; Yu, C.H. (Oak Ridge) ; Yumatov, V. (Moscow, ITEP) ; Zhitnikov, I. (Dubna, JINR)

Published in: Int.J.Mod.Phys.
Year: 2015
Vol.: A30    Num./Issue: 12
Page No: 1530032
Pages: 9
Year: 2015-04-28 published

Abstract: If neutrinos are Majorana particles, i.e. fermions that are their own antiparticles, then neutrinoless double-beta (0νββ) decay is possible. In such a process, two neutrons can simultaneously decay into two protons and two electrons without emitting neutrinos. Neutrinos being Majorana particles would explicitly violate lepton number conservation, and might play a role in the matter–antimatter asymmetry in the universe. The MAJORANA DEMONSTRATOR experiment is under construction at the Sanford Underground Research Facility in Lead, SD and will search for the neutrinoless double-beta (0νββ) decay of the $^{76}$Ge isotope. The goal of the experiment is to demonstrate that it is possible to achieve a sufficiently low background rate in the 4 keV region of interest (ROI) around the 2039 keV Q-value to justify building a tonne-scale experiment. In this paper, we discuss the physics and design of the MAJORANA DEMONSTRATOR, its approach to achieving ultra-low background and the status of the experiment.

Keyword(s): Neutrinoless double beta decay ; germanium detector ; Majorana

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Numbers of unique views: 356
DOI: 10.1142/S0217751X1530032X
 Record created 2015-08-03, last modified 2015-08-03

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