Saved in:
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2024
|
| Subjects: | |
| Online Access: | https://arxiv.org/abs/2412.16047 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866908481198489600 |
|---|---|
| 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. Henning, R. Hoppe, E. W. Kouzes, R. T. Li, A. Massarczyk, R. Meijer, S. J. 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. |
| 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. Henning, R. Hoppe, E. W. Kouzes, R. T. Li, A. Massarczyk, R. Meijer, S. J. 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. |
| contents | The Majorana Demonstrator was an ultra-low-background experiment designed for neutrinoless double-beta decay ($0νββ$) investigation in $^{76}$Ge. Located at the Sanford Underground Research Facility in Lead, South Dakota, the Demonstrator utilized modular high-purity Ge detector arrays within shielded vacuum cryostats, operating deep underground. The arrays, with a capacity of up to 40.4 kg (27.2 kg enriched to $\sim 88\%$ in $^{76}$Ge), have accumulated the full data set, totaling 64.5 kg yr of enriched active exposure and 27.4 kg yr of exposure for natural detectors. Our updated search improves previously explored three-nucleon decay modes in Ge isotopes, setting new partial lifetime limits of $1.83\times10^{26}$ years (90\% confidence level) for $^{76}$Ge($ppp$) $\rightarrow$ $^{73}$Cu e$^+π^+π^+$ and $^{76}$Ge($ppn$) $\rightarrow$ $^{73}$Zn e$^+π^+$. The partial lifetime limit for the fully inclusive tri-proton decay mode of $^{76}$Ge is found to be $2.1\times10^{25}$ yr. Furthermore, we have updated limits for corresponding multi-nucleon decays. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2412_16047 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Rare multi-nucleon decays with the full data sets of the Majorana Demonstrator 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. Henning, R. Hoppe, E. W. Kouzes, R. T. Li, A. Massarczyk, R. Meijer, S. J. 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. Nuclear Experiment The Majorana Demonstrator was an ultra-low-background experiment designed for neutrinoless double-beta decay ($0νββ$) investigation in $^{76}$Ge. Located at the Sanford Underground Research Facility in Lead, South Dakota, the Demonstrator utilized modular high-purity Ge detector arrays within shielded vacuum cryostats, operating deep underground. The arrays, with a capacity of up to 40.4 kg (27.2 kg enriched to $\sim 88\%$ in $^{76}$Ge), have accumulated the full data set, totaling 64.5 kg yr of enriched active exposure and 27.4 kg yr of exposure for natural detectors. Our updated search improves previously explored three-nucleon decay modes in Ge isotopes, setting new partial lifetime limits of $1.83\times10^{26}$ years (90\% confidence level) for $^{76}$Ge($ppp$) $\rightarrow$ $^{73}$Cu e$^+π^+π^+$ and $^{76}$Ge($ppn$) $\rightarrow$ $^{73}$Zn e$^+π^+$. The partial lifetime limit for the fully inclusive tri-proton decay mode of $^{76}$Ge is found to be $2.1\times10^{25}$ yr. Furthermore, we have updated limits for corresponding multi-nucleon decays. |
| title | Rare multi-nucleon decays with the full data sets of the Majorana Demonstrator |
| topic | Nuclear Experiment |
| url | https://arxiv.org/abs/2412.16047 |