Final Results of the MAJORANA DEMONSTRATOR's Search for Double-Beta Decay of $^{76}$Ge to Excited States of $^{76}$Se

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Main Authors:	Arnquist, I. J., Avignone III, F. T., Barabash, A. S., Blalock, E., Bos, B., Busch, M., Chan, Y. -D., Chapman, J. R., Christofferson, C. D., Chu, P. -H., Cuesta, C., Detwiler, J. A., Efremenko, Yu., Ejiri, H., Elliott, S. R., Fuad, N., Giovanetti, G. K., Green, M. P., Gruszko, J., Guinn, I. S., Guiseppe, V. E., Haufe, C. R., Henning, R., Aguilar, D. Hervas, Hoppe, E. W., Kim, I., Kouzes, R. T., Lannen V, T. E., Li, A., Massarczyk, R., Meijer, S. J., Oli, T. K., Paudel, L. S., Pettus, W., Poon, A. W. P., Radford, D. C., Reine, A. L., Rielage, K., Schaper, D. C., Schleich, S. J., Tedeschi, D., Varner, R. L., Vasilyev, S., Watkins, S. L., Wilkerson, J. F., Wiseman, C., Yu, C. -H., Zhu, B. X.
Format:	Preprint
Published:	2024
Subjects:	Nuclear Experiment
Online Access:	Acceder al recurso
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author	Arnquist, I. J. Avignone III, F. T. Barabash, A. S. Blalock, E. Bos, B. Busch, M. Chan, Y. -D. Chapman, J. R. Christofferson, C. D. Chu, P. -H. Cuesta, C. Detwiler, J. A. Efremenko, Yu. Ejiri, H. Elliott, S. R. Fuad, N. Giovanetti, G. K. Green, M. P. Gruszko, J. Guinn, I. S. Guiseppe, V. E. Haufe, C. R. Henning, R. Aguilar, D. Hervas Hoppe, E. W. Kim, I. Kouzes, R. T. Lannen V, T. E. Li, A. Massarczyk, R. Meijer, S. J. Oli, T. K. Paudel, L. S. Pettus, W. Poon, A. W. P. Radford, D. C. Reine, A. L. Rielage, K. Schaper, D. C. Schleich, S. J. Tedeschi, D. Varner, R. L. Vasilyev, S. Watkins, S. L. Wilkerson, J. F. Wiseman, C. Yu, C. -H. Zhu, B. X.
author_facet	Arnquist, I. J. Avignone III, F. T. Barabash, A. S. Blalock, E. Bos, B. Busch, M. Chan, Y. -D. Chapman, J. R. Christofferson, C. D. Chu, P. -H. Cuesta, C. Detwiler, J. A. Efremenko, Yu. Ejiri, H. Elliott, S. R. Fuad, N. Giovanetti, G. K. Green, M. P. Gruszko, J. Guinn, I. S. Guiseppe, V. E. Haufe, C. R. Henning, R. Aguilar, D. Hervas Hoppe, E. W. Kim, I. Kouzes, R. T. Lannen V, T. E. Li, A. Massarczyk, R. Meijer, S. J. Oli, T. K. Paudel, L. S. Pettus, W. Poon, A. W. P. Radford, D. C. Reine, A. L. Rielage, K. Schaper, D. C. Schleich, S. J. Tedeschi, D. Varner, R. L. Vasilyev, S. Watkins, S. L. Wilkerson, J. F. Wiseman, C. Yu, C. -H. Zhu, B. X.
contents	$^{76}$Ge can $ββ$ decay into three possible excited states of $^{76}$Se, with the emission of two or, if the neutrino is Majorana, zero neutrinos. None of these six transitions have yet been observed. The MAJORANA DEMONSTRATOR was designed to study $ββ$ decay of $^{76}$Ge using a low background array of high purity germanium detectors. With 98.2 kg-y of isotopic exposure, the DEMONSTRATOR sets the strongest half-life limits to date for all six transition modes. For $2νββ$ to the $0^+_1$ state of $^{76}$Se, this search has begun to probe for the first time half-life values predicted using modern many-body nuclear theory techniques, setting a limit of $T_{1/2}>1.5\times10^{24}$ y (90% CL).
format	Preprint
id	arxiv_https___arxiv_org_abs_2410_03995
institution	arXiv
publishDate	2024
record_format	arxiv
spellingShingle	Final Results of the MAJORANA DEMONSTRATOR's Search for Double-Beta Decay of $^{76}$Ge to Excited States of $^{76}$Se Arnquist, I. J. Avignone III, F. T. Barabash, A. S. Blalock, E. Bos, B. Busch, M. Chan, Y. -D. Chapman, J. R. Christofferson, C. D. Chu, P. -H. Cuesta, C. Detwiler, J. A. Efremenko, Yu. Ejiri, H. Elliott, S. R. Fuad, N. Giovanetti, G. K. Green, M. P. Gruszko, J. Guinn, I. S. Guiseppe, V. E. Haufe, C. R. Henning, R. Aguilar, D. Hervas Hoppe, E. W. Kim, I. Kouzes, R. T. Lannen V, T. E. Li, A. Massarczyk, R. Meijer, S. J. Oli, T. K. Paudel, L. S. Pettus, W. Poon, A. W. P. Radford, D. C. Reine, A. L. Rielage, K. Schaper, D. C. Schleich, S. J. Tedeschi, D. Varner, R. L. Vasilyev, S. Watkins, S. L. Wilkerson, J. F. Wiseman, C. Yu, C. -H. Zhu, B. X. Nuclear Experiment $^{76}$Ge can $ββ$ decay into three possible excited states of $^{76}$Se, with the emission of two or, if the neutrino is Majorana, zero neutrinos. None of these six transitions have yet been observed. The MAJORANA DEMONSTRATOR was designed to study $ββ$ decay of $^{76}$Ge using a low background array of high purity germanium detectors. With 98.2 kg-y of isotopic exposure, the DEMONSTRATOR sets the strongest half-life limits to date for all six transition modes. For $2νββ$ to the $0^+_1$ state of $^{76}$Se, this search has begun to probe for the first time half-life values predicted using modern many-body nuclear theory techniques, setting a limit of $T_{1/2}>1.5\times10^{24}$ y (90% CL).
title	Final Results of the MAJORANA DEMONSTRATOR's Search for Double-Beta Decay of $^{76}$Ge to Excited States of $^{76}$Se
topic	Nuclear Experiment
url	https://arxiv.org/abs/2410.03995