Spectral analysis for the Majorana Demonstrator experiment
| Autor: | B. X. Zhu, V. Yumatov, J. Gruszko, Yu. Efremenko, M. Buuck, G. K. Giovanetti, Keith Rielage, B. Shanks, V. E. Guiseppe, T. Gilliss, R. D. Martin, R. G. H. Robertson, A. W. Bradley, T. Bode, C-H. Yu, Eric W. Hoppe, J. A. Detwiler, M. Shirchenko, M. P. Green, C. J. Barton, C. Dunagan, T. S. Caldwell, Ralph Massarczyk, Walter C. Pettus, C. R. Haufe, C.M. O'Shaughnessy, S. I. Alvis, A. L. Reine, S. Vasilyev, N. Abgrall, I. Zhitnikov, R. L. Varner, F. E. Bertrand, I. J. Arnquist, N. W. Ruof, Anne-Marie Suriano, I. S. Guinn, C. Cuesta, W. Xu, J. E. Trimble, Pinghan Chu, G. Othman, A. W. P. Poon, Y-D. Chan, K. J. Keeter, D. Tedeschi, L. Hehn, S. I. Konovalov, J. Myslik, M. A. Howe, Richard T. Kouzes, J. Rager, H. Ejiri, Steven Elliott, Kai Vetter, C. D. Christofferson, M. F. Kidd, Susanne Mertens, E. Yakushev, J. F. Wilkerson, S. J. Meijer, B. R. White, K. Vorren, V.B. Brudanin, F. T. Avignone, Reyco Henning, A. M. Lopez, C. Wiseman, A. S. Barabash, D. C. Radford, M. Busch |
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| Rok vydání: | 2020 |
| Předmět: |
Physics
History Physics - Instrumentation and Detectors FOS: Physical sciences Molecular Instrumentation and Detectors (physics.ins-det) nucl-ex Condensed Matter Physics Atomic Computer Science Applications Education Combinatorics Other Physical Sciences Monte carlo data MAJORANA Particle and Plasma Physics Background suppression Statistical analysis Spectral analysis Nuclear Nuclear Experiment (nucl-ex) Nuclear Experiment physics.ins-det |
| Zdroj: | Journal of Physics: Conference Series, vol 1342, iss 1 Journal of Physics Conference Series, vol 1342, iss 1 Hehn, L; Abgrall, N; Alvis, SI; Arnquist, IJ; III, FTA; Barabash, AS; et al.(2018). Spectral analysis for the Majorana Demonstrator experiment. Lawrence Berkeley National Laboratory: Retrieved from: http://www.escholarship.org/uc/item/6v09966f |
| Popis: | The MAJORANA DEMONSTRATOR is an experiment constructed to search for neutrinoless double-beta decays in germanium-76 and to demonstrate the feasibility to deploy a ton-scale experiment in a phased and modular fashion. It consists of two modular arrays of natural and $^{76}\textrm{Ge}$-enriched germanium detectors totaling 44.1 kg (29.7 kg enriched detectors), located at the 4850' level of the Sanford Underground Research Facility in Lead, South Dakota, USA. Data taken with this setup since summer 2015 at different construction stages of the experiment show a clear reduction of the observed background index around the ROI for $0\nu\beta\beta$-decay search due to improvements in shielding. We discuss the statistical approaches to search for a $0\nu\beta\beta$-signal and derive the physics sensitivity for an expected exposure of $10\,\textrm{kg}{\cdot}\textrm{y}$ from enriched detectors using a profile likelihood based hypothesis test in combination with toy Monte Carlo data. Comment: 5 page, 2 figures, to appear in Proceedings of TAUP 2017 - XV International Conference on Topics in Astroparticle and Underground Physics, 24 - 28 July 2017, Sudbury, ON, Canada |
| Databáze: | OpenAIRE |
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