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Title: Progress Toward A $2νββ$ Measurement For The Majorana Demonstrator

Abstract

The MAJORANA DEMONSTRATOR is a 76Ge-based neutrinoless double-beta decay ($$0\nu\beta\beta$$) experiment. Staged at the 4850 ft level of the Sanford Underground Research Facility, the DEMONSTRATOR operates an array of high-purity p-type point contact Ge detectors deployed within a graded passive shield and an active muon veto system. The present work concerns the two-neutrino double-beta decay mode ($$2\nu\beta\beta$$) of 76Ge. For Ge detectors, having superior energy resolution (0.1%), this mode poses negligible background to the $$0\nu\beta\beta$$ mode, even for a ton-scale experiment. However, the measurement of the $$2\nu\beta\beta$$ mode allows for careful systematics checks of active detector mass, enrichment fraction, and pulse shape discrimination cuts related to both the $$0\nu\beta\beta$$ and $$2\nu\beta\beta$$ decay modes. A precision measurement of the $$2\nu\beta\beta$$ shape also allows searches for spectral distortions, possibly indicative of new physics, including $$0\nu\beta\beta\chi$$. Work is underway to construct a full experimental background model enabling a Bayesian fit to the measured energy spectrum and extraction of a precise $$2\nu\beta\beta$$ spectrum and half-life.

Authors:
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Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
OSTI Identifier:
1460327
DOE Contract Number:  
AC02-05CH11231
Resource Type:
Journal Article
Journal Name:
arXiv.org Repository
Additional Journal Information:
Journal Volume: 2017; Related Information: https://arxiv.org/abs/1711.05801v2; Journal ID: ISSN 9999-0017
Publisher:
Cornell University
Country of Publication:
United States
Language:
English

Citation Formats

Gilliss, T, Abgrall, N, Alvis, SI, Arnquist, IJ, III, FTA, Barabash, AS, Barton, CJ, Bertrand, FE, Bode, T, Bradley, AW, Brudanin, V, Busch, M, Buuck, M, Caldwell, TS, Chan, Y-D, Christofferson, CD, Chu, P-H, Cuesta, C, Detwiler, JA, Dunagan, C, Efremenko, Y, Ejiri, H, Elliott, SR, Giovanetti, GK, Green, MP, Gruszko, J, Guinn, IS, Guiseppe, VE, Haufe, CR, Hehn, L, Henning, R, Hoppe, EW, Howe, MA, Keeter, KJ, Kidd, MF, Konovalov, SI, Kouzes, RT, Lopez, AM, Martin, RD, Massarczyk, R, Meijer, SJ, Mertens, S, Myslik, J, O'Shaughnessy, C, Othman, G, Pettus, W, Poon, AWP, Radford, DC, Rager, J, Reine, AL, Rielage, K, Robertson, RGH, Ruof, NW, Shanks, B, Shirchenko, M, Suriano, AM, Tedeschi, D, Trimble, JE, Varner, RL, Vasilyev, S, Vetter, K, Vorren, K, White, BR, Wilkerson, JF, Wiseman, C, Xu, W, Yakushev, E, Yu, C-H, Yumatov, V, Zhitnikov, I, and Zhu, BX. Progress Toward A $2νββ$ Measurement For The Majorana Demonstrator. United States: N. p., 2018. Web.
Gilliss, T, Abgrall, N, Alvis, SI, Arnquist, IJ, III, FTA, Barabash, AS, Barton, CJ, Bertrand, FE, Bode, T, Bradley, AW, Brudanin, V, Busch, M, Buuck, M, Caldwell, TS, Chan, Y-D, Christofferson, CD, Chu, P-H, Cuesta, C, Detwiler, JA, Dunagan, C, Efremenko, Y, Ejiri, H, Elliott, SR, Giovanetti, GK, Green, MP, Gruszko, J, Guinn, IS, Guiseppe, VE, Haufe, CR, Hehn, L, Henning, R, Hoppe, EW, Howe, MA, Keeter, KJ, Kidd, MF, Konovalov, SI, Kouzes, RT, Lopez, AM, Martin, RD, Massarczyk, R, Meijer, SJ, Mertens, S, Myslik, J, O'Shaughnessy, C, Othman, G, Pettus, W, Poon, AWP, Radford, DC, Rager, J, Reine, AL, Rielage, K, Robertson, RGH, Ruof, NW, Shanks, B, Shirchenko, M, Suriano, AM, Tedeschi, D, Trimble, JE, Varner, RL, Vasilyev, S, Vetter, K, Vorren, K, White, BR, Wilkerson, JF, Wiseman, C, Xu, W, Yakushev, E, Yu, C-H, Yumatov, V, Zhitnikov, I, & Zhu, BX. Progress Toward A $2νββ$ Measurement For The Majorana Demonstrator. United States.
Gilliss, T, Abgrall, N, Alvis, SI, Arnquist, IJ, III, FTA, Barabash, AS, Barton, CJ, Bertrand, FE, Bode, T, Bradley, AW, Brudanin, V, Busch, M, Buuck, M, Caldwell, TS, Chan, Y-D, Christofferson, CD, Chu, P-H, Cuesta, C, Detwiler, JA, Dunagan, C, Efremenko, Y, Ejiri, H, Elliott, SR, Giovanetti, GK, Green, MP, Gruszko, J, Guinn, IS, Guiseppe, VE, Haufe, CR, Hehn, L, Henning, R, Hoppe, EW, Howe, MA, Keeter, KJ, Kidd, MF, Konovalov, SI, Kouzes, RT, Lopez, AM, Martin, RD, Massarczyk, R, Meijer, SJ, Mertens, S, Myslik, J, O'Shaughnessy, C, Othman, G, Pettus, W, Poon, AWP, Radford, DC, Rager, J, Reine, AL, Rielage, K, Robertson, RGH, Ruof, NW, Shanks, B, Shirchenko, M, Suriano, AM, Tedeschi, D, Trimble, JE, Varner, RL, Vasilyev, S, Vetter, K, Vorren, K, White, BR, Wilkerson, JF, Wiseman, C, Xu, W, Yakushev, E, Yu, C-H, Yumatov, V, Zhitnikov, I, and Zhu, BX. Mon . "Progress Toward A $2νββ$ Measurement For The Majorana Demonstrator". United States.
@article{osti_1460327,
title = {Progress Toward A $2νββ$ Measurement For The Majorana Demonstrator},
author = {Gilliss, T and Abgrall, N and Alvis, SI and Arnquist, IJ and III, FTA and Barabash, AS and Barton, CJ and Bertrand, FE and Bode, T and Bradley, AW and Brudanin, V and Busch, M and Buuck, M and Caldwell, TS and Chan, Y-D and Christofferson, CD and Chu, P-H and Cuesta, C and Detwiler, JA and Dunagan, C and Efremenko, Y and Ejiri, H and Elliott, SR and Giovanetti, GK and Green, MP and Gruszko, J and Guinn, IS and Guiseppe, VE and Haufe, CR and Hehn, L and Henning, R and Hoppe, EW and Howe, MA and Keeter, KJ and Kidd, MF and Konovalov, SI and Kouzes, RT and Lopez, AM and Martin, RD and Massarczyk, R and Meijer, SJ and Mertens, S and Myslik, J and O'Shaughnessy, C and Othman, G and Pettus, W and Poon, AWP and Radford, DC and Rager, J and Reine, AL and Rielage, K and Robertson, RGH and Ruof, NW and Shanks, B and Shirchenko, M and Suriano, AM and Tedeschi, D and Trimble, JE and Varner, RL and Vasilyev, S and Vetter, K and Vorren, K and White, BR and Wilkerson, JF and Wiseman, C and Xu, W and Yakushev, E and Yu, C-H and Yumatov, V and Zhitnikov, I and Zhu, BX},
abstractNote = {The MAJORANA DEMONSTRATOR is a 76Ge-based neutrinoless double-beta decay ($0\nu\beta\beta$) experiment. Staged at the 4850 ft level of the Sanford Underground Research Facility, the DEMONSTRATOR operates an array of high-purity p-type point contact Ge detectors deployed within a graded passive shield and an active muon veto system. The present work concerns the two-neutrino double-beta decay mode ($2\nu\beta\beta$) of 76Ge. For Ge detectors, having superior energy resolution (0.1%), this mode poses negligible background to the $0\nu\beta\beta$ mode, even for a ton-scale experiment. However, the measurement of the $2\nu\beta\beta$ mode allows for careful systematics checks of active detector mass, enrichment fraction, and pulse shape discrimination cuts related to both the $0\nu\beta\beta$ and $2\nu\beta\beta$ decay modes. A precision measurement of the $2\nu\beta\beta$ shape also allows searches for spectral distortions, possibly indicative of new physics, including $0\nu\beta\beta\chi$. Work is underway to construct a full experimental background model enabling a Bayesian fit to the measured energy spectrum and extraction of a precise $2\nu\beta\beta$ spectrum and half-life.},
doi = {},
journal = {arXiv.org Repository},
issn = {9999-0017},
number = ,
volume = 2017,
place = {United States},
year = {2018},
month = {5}
}