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Search for Majorana Neutrinos with the Complete KamLAND-Zen Dataset

Fuente: arXiv

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Detalles Bibliográficos
Autores principales:	Abe, S., Araki, T., Chiba, K., Eda, T., Eizuka, M., Funahashi, Y., Furuto, A., Gando, A., Gando, Y., Goto, S., Hachiya, T., Hata, K., Ichimura, K., Ieki, S., Ikeda, H., Inoue, K., Ishidoshiro, K., Kamei, Y., Kawada, N., Kishimoto, Y., Koga, M., Marthe, A., Matsumoto, Y., Mitsui, T., Miyake, H., Morita, D., Nakajima, R., Nakamura, K., Nakamura, R., Nakane, J., Ono, T., Ozaki, H., Saito, K., Sakai, T., Shimizu, I., Shirai, J., Shiraishi, K., Suzuki, A., Tachibana, K., Tamae, K., Watanabe, H., Watanabe, K., Yoshida, S., Umehara, S., Fushimi, K., Kotera, K., Urano, Y., Berger, B. E., Fujikawa, B. K., Learned, J. G., Maricic, J., Fu, Z., Ghosh, S., Smolsky, J., Winslow, L. A., Efremenko, Y., Karwowski, H. J., Markoff, D. M., Tornow, W., Dell'Oro, S., O'Donnell, T., Detwiler, J. A., Enomoto, S., Decowski, M. P., Weerman, K. M., Grant, C., Penek, O., Song, H., Li, A., Axani, S. N., Garcia, M., Sarfraz, M.
Formato:	Preprint
Publicado:	2024
Materias:	High Energy Physics - Experiment
Acceso en línea:	Acceder al recurso
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

_version_	1866914413835976704
author	Abe, S. Araki, T. Chiba, K. Eda, T. Eizuka, M. Funahashi, Y. Furuto, A. Gando, A. Gando, Y. Goto, S. Hachiya, T. Hata, K. Ichimura, K. Ieki, S. Ikeda, H. Inoue, K. Ishidoshiro, K. Kamei, Y. Kawada, N. Kishimoto, Y. Koga, M. Marthe, A. Matsumoto, Y. Mitsui, T. Miyake, H. Morita, D. Nakajima, R. Nakamura, K. Nakamura, R. Nakamura, R. Nakane, J. Ono, T. Ozaki, H. Saito, K. Sakai, T. Shimizu, I. Shirai, J. Shiraishi, K. Suzuki, A. Tachibana, K. Tamae, K. Watanabe, H. Watanabe, K. Yoshida, S. Umehara, S. Fushimi, K. Kotera, K. Urano, Y. Berger, B. E. Fujikawa, B. K. Learned, J. G. Maricic, J. Fu, Z. Ghosh, S. Smolsky, J. Winslow, L. A. Efremenko, Y. Karwowski, H. J. Markoff, D. M. Tornow, W. Dell'Oro, S. O'Donnell, T. Detwiler, J. A. Enomoto, S. Decowski, M. P. Weerman, K. M. Grant, C. Penek, O. Song, H. Li, A. Axani, S. N. Garcia, M. Sarfraz, M.
author_facet	Abe, S. Araki, T. Chiba, K. Eda, T. Eizuka, M. Funahashi, Y. Furuto, A. Gando, A. Gando, Y. Goto, S. Hachiya, T. Hata, K. Ichimura, K. Ieki, S. Ikeda, H. Inoue, K. Ishidoshiro, K. Kamei, Y. Kawada, N. Kishimoto, Y. Koga, M. Marthe, A. Matsumoto, Y. Mitsui, T. Miyake, H. Morita, D. Nakajima, R. Nakamura, K. Nakamura, R. Nakamura, R. Nakane, J. Ono, T. Ozaki, H. Saito, K. Sakai, T. Shimizu, I. Shirai, J. Shiraishi, K. Suzuki, A. Tachibana, K. Tamae, K. Watanabe, H. Watanabe, K. Yoshida, S. Umehara, S. Fushimi, K. Kotera, K. Urano, Y. Berger, B. E. Fujikawa, B. K. Learned, J. G. Maricic, J. Fu, Z. Ghosh, S. Smolsky, J. Winslow, L. A. Efremenko, Y. Karwowski, H. J. Markoff, D. M. Tornow, W. Dell'Oro, S. O'Donnell, T. Detwiler, J. A. Enomoto, S. Decowski, M. P. Weerman, K. M. Grant, C. Penek, O. Song, H. Li, A. Axani, S. N. Garcia, M. Sarfraz, M.
contents	We present a search for neutrinoless double-beta ($0νββ$) decay of $^{136}$Xe using the full \mbox{KamLAND-Zen 800} dataset with 745\,kg of enriched xenon, corresponding to an exposure of $2.1$\,ton\,yr of $^{136}$Xe. This updated search benefits from a more than twofold increase in exposure, recovery of photo-sensor gain, and reduced background from muon-induced spallation of xenon. Combining with the search in the previous KamLAND-Zen phase, we obtain a lower limit for the $0νββ$ decay half-life of $T_{1/2}^{0ν} > 3.8 \times 10^{26}$\,yr at 90\% C.L., a factor of 1.7 improvement over the previous limit. The corresponding upper limits on the effective Majorana neutrino mass are in the range 28--122\,meV using phenomenological nuclear matrix element calculations.
format	Preprint
id	arxiv_https___arxiv_org_abs_2406_11438
institution	arXiv
publishDate	2024
record_format	arxiv
spellingShingle	Search for Majorana Neutrinos with the Complete KamLAND-Zen Dataset Abe, S. Araki, T. Chiba, K. Eda, T. Eizuka, M. Funahashi, Y. Furuto, A. Gando, A. Gando, Y. Goto, S. Hachiya, T. Hata, K. Ichimura, K. Ieki, S. Ikeda, H. Inoue, K. Ishidoshiro, K. Kamei, Y. Kawada, N. Kishimoto, Y. Koga, M. Marthe, A. Matsumoto, Y. Mitsui, T. Miyake, H. Morita, D. Nakajima, R. Nakamura, K. Nakamura, R. Nakamura, R. Nakane, J. Ono, T. Ozaki, H. Saito, K. Sakai, T. Shimizu, I. Shirai, J. Shiraishi, K. Suzuki, A. Tachibana, K. Tamae, K. Watanabe, H. Watanabe, K. Yoshida, S. Umehara, S. Fushimi, K. Kotera, K. Urano, Y. Berger, B. E. Fujikawa, B. K. Learned, J. G. Maricic, J. Fu, Z. Ghosh, S. Smolsky, J. Winslow, L. A. Efremenko, Y. Karwowski, H. J. Markoff, D. M. Tornow, W. Dell'Oro, S. O'Donnell, T. Detwiler, J. A. Enomoto, S. Decowski, M. P. Weerman, K. M. Grant, C. Penek, O. Song, H. Li, A. Axani, S. N. Garcia, M. Sarfraz, M. High Energy Physics - Experiment We present a search for neutrinoless double-beta ($0νββ$) decay of $^{136}$Xe using the full \mbox{KamLAND-Zen 800} dataset with 745\,kg of enriched xenon, corresponding to an exposure of $2.1$\,ton\,yr of $^{136}$Xe. This updated search benefits from a more than twofold increase in exposure, recovery of photo-sensor gain, and reduced background from muon-induced spallation of xenon. Combining with the search in the previous KamLAND-Zen phase, we obtain a lower limit for the $0νββ$ decay half-life of $T_{1/2}^{0ν} > 3.8 \times 10^{26}$\,yr at 90\% C.L., a factor of 1.7 improvement over the previous limit. The corresponding upper limits on the effective Majorana neutrino mass are in the range 28--122\,meV using phenomenological nuclear matrix element calculations.
title	Search for Majorana Neutrinos with the Complete KamLAND-Zen Dataset
topic	High Energy Physics - Experiment
url	https://arxiv.org/abs/2406.11438