New limit on the KL0→π0νν̄ decay rate

J. K. Ahn, Y. Akune, V. Baranov, M. Doroshenko, Y. Fujioka, Y. B. Hsiung, T. Inagaki, S. Ishibashi, N. Ishihara, H. Ishii, T. Iwata, S. Kobayashi, S. Komatsu, T. K. Komatsubara, A. S. Kurilin, E. Kuzmin, A. Lednev, H. S. Lee, S. Y. Lee, G. Y. LimT. Matsumura, A. Moisseenko, H. Morii, T. Morimoto, T. Nakano, N. Nishi, J. Nix, M. Nomachi, T. Nomura, H. Okuno, K. Omata, G. N. Perdue, S. Perov, S. Podolsky, S. Porokhovoy, K. Sakashita, N. Sasao, H. Sato, T. Sato, M. Sekimoto, T. Shinkawa, Y. Sugaya, A. Sugiyama, T. Sumida, Y. Tajima, Z. Tsamalaidze, T. Tsukamoto, Y. Wah, H. Watanabe, M. Yamaga, T. Yamanaka, H. Y. Yoshida, Y. Yoshimura

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)


The first dedicated experiment for the rare kaon decay KL0→π0ν ν̄ has been performed by the E391a Collaboration at the KEK 12-GeV proton synchrotron. A new upper limit of 2.1×10-7 at the 90% confidence level was set for the branching ratio of the decay KL0→π0νν̄ using about 10% of the data collected during the first period of data taking.

Original languageEnglish
Article number051105
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Issue number5
Publication statusPublished - 2006
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)


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