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Search for Majorana Neutrinos Near the Inverted Mass Hierarchy Region with KamLAND-Zen
Open accessAbstract
We present an improved search for neutrinoless double-beta (0νββ) decay of ^{136}Xe in the KamLAND-Zen experiment. Owing to purification of the xenon-loaded liquid scintillator, we achieved a significant reduction of the ^{110m}Ag contaminant identified in previous searches. Combining the results from the first and second phase, we obtain a lower limit for the 0νββ decay half-life of T_{1/2}^{0ν}>1.07×10^{26} yr at 90% C.L., an almost sixfold improvement over previous limits. Using commonly adopted nuclear matrix element calculations, the corresponding upper limits on the effective Majorana neutrino mass are in the range 61-165 meV. For the most optimistic nuclear matrix elements, this limit reaches the bottom of the quasidegenerate neutrino mass region.
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Allison, J., Amako, K., Apostolakis, J., Araujo, H., Arce Dubois, P., Asai, M., Barrand, G., Capra, R., Chauvie, S., Chytracek, R., et al. (2006) · IEEE Transactions on Nuclear Science · doi:10.1109/tns.2006.869826 · Cited by 6,946
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Status and future of nuclear matrix elements for neutrinoless double-beta decay: a review
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Alduino, C., Alessandria, F., Alfonso, K., Andreotti, E., Arnaboldi, C., Avignone, F. T., Azzolini, O., Balata, M., Bandac, I., Banks, T. I., et al. (2018) · Physical Review Letters · doi:10.1103/physrevlett.120.132501 · Cited by 267
Self-citationImproved Limit on Neutrinoless Double- β Decay of Ge76 from GERDA Phase II
Agostini, M., Bakalyarov, A. M., Balata, M., Barabanov, I., Baudis, L., Bauer, C., Bellotti, E., Belogurov, S., Bettini, A., Bezrukov, L., et al. (2018) · Physical Review Letters · doi:10.1103/physrevlett.120.132503 · Cited by 258
Search for Neutrinoless Double-βDecay with the Complete EXO-200 Dataset
Anton, G., Badhrees, I., Barbeau, P. S., Beck, D., Belov, V., Bhatta, T., Breidenbach, M., Brunner, T., Cao, G. F., Cen, W. R., et al. (2019) · Physical Review Letters · doi:10.1103/physrevlett.123.161802 · Cited by 253
Metadata
- Authors
- Gando, A., Gando, Y., Hachiya, T., Hayashi, A., Hayashida, S., Ikeda, H., Inoue, K., Ishidoshiro, K., Karino, Y., Koga, M., Matsuda, S., Mitsui, T., Nakamura, K., Obara, S., Oura, T., Ozaki, H., Shimizu, I., Shirahata, Y., Shirai, J., Suzuki, A., Takai, T., Tamae, K., Teraoka, Y., Ueshima, K., Watanabe, H., Kozlov, A., Takemoto, Y., Yoshida, S., Fushimi, K., Banks, T. I., Berger, B. E., Fujikawa, B. K., O’Donnell, T., Winslow, L. A., Efremenko, Y., Karwowski, H. J., Markoff, D. M., Tornow, W., Detwiler, J. A., Enomoto, S., Decowski, M. P., & KamLAND-Zen Collaboration
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2016-08-16
- Volume
- 117
- Issue
- 8
- Pages
- 082503-082503
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2513100569
- Cited by
- 969
- References
- 1
- FWCI
- 61.71
- Type
- journal article
- Language
- en
- Open access
- green
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- Gando, A., Gando, Y., Hachiya, T., Hayashi, A., Hayashida, S., Ikeda, H., Inoue, K., Ishidoshiro, K., Karino, Y., Koga, M., Matsuda, S., Mitsui, T., Nakamura, K., Obara, S., Oura, T., Ozaki, H., Shimizu, I., Shirahata, Y., Shirai, J., . . . KamLAND-Zen Collaboration. (2016). Search for Majorana Neutrinos Near the Inverted Mass Hierarchy Region with KamLAND-Zen. Physical Review Letters. https://doi.org/10.1103/physrevlett.117.082503
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
