Search for the invisible decay of neutrons with KamLAND

T. Araki*, S. Enomoto, K. Furuno, Y. Gando, K. Ichimura, H. Ikeda, K. Inoue, Y. Kishimoto, M. Koga, Y. Koseki, T. Maeda, T. Mitsui, M. Motoki, K. Nakajima, K. Nakamura, H. Ogawa, M. Ogawa, K. Owada, J. S. Ricol, I. ShimizuJ. Shirai, F. Suekane, A. Suzuki, K. Tada, S. Takeuchi, K. Tamae, Y. Tsuda, H. Watanabe, J. Busenitz, T. Classen, Z. Djurcic, G. Keefer, D. S. Leonard, A. Piepke, E. Yakushev, B. E. Berger, Y. D. Chan, M. P. Decowski, D. A. Dwyer, S. J. Freedman, B. K. Fujikawa, J. Goldman, F. Gray, K. M. Heeger, L. Hsu, K. T. Lesko, K. B. Luk, H. Murayama, T. O'Donnell, A. W.P. Poon, H. M. Steiner, L. A. Winslow, C. Jillings, C. Mauger, R. D. McKeown, P. Vogel, C. Zhang, C. E. Lane, T. Miletic, G. Guillian, J. G. Learned, J. Maricic, S. Matsuno, S. Pakvasa, G. A. Horton-Smith, S. Dazeley, S. Hatakeyama, A. Rojas, R. Svoboda, B. D. Dieterle, J. Detwiler, G. Gratta, K. Ishii, N. Tolich, Y. Uchida, M. Batygov, W. Bugg, Y. Efremenko, Y. Kamyshkov, A. Kozlov, Y. Nakamura, H. J. Karwowski, D. M. Markoff, R. M. Rohm, W. Tornow, R. Wendell, M. J. Chen, Y. F. Wang, F. Piquemal

*Corresponding author for this work

Research output: Contribution to journalJournal Articlepeer-review

69 Citations (Scopus)

Abstract

The Kamioka Liquid scintillator Anti-Neutrino Detector is used in a search for single neutron or two-neutron intranuclear disappearance that would produce holes in the s-shell energy level of C12 nuclei. Such holes could be created as a result of nucleon decay into invisible modes (inv), e.g., n→3ν or nn→2ν. The deexcitation of the corresponding daughter nucleus results in a sequence of space and time-correlated events observable in the liquid scintillator detector. We report on new limits for one- and two-neutron disappearance: τ(n→inv)>5.8×1029 years and τ(nn→inv)>1.4×1030 years at 90% C.L. These results represent an improvement of factors of ∼3 and >104 over previous experiments.

Original languageEnglish
Article number101802
JournalPhysical Review Letters
Volume96
Issue number10
DOIs
Publication statusPublished - 2006
Externally publishedYes

Fingerprint

Dive into the research topics of 'Search for the invisible decay of neutrons with KamLAND'. Together they form a unique fingerprint.

Cite this