/ Experiment-HEP hep-ex/0607016


New limit on the K0(L) ---> pi0 nu anti-nu decay rate


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

Published in: Phys.Rev. / Erratum-ibid.
Year: 2006 / 2006
Vol.: D74 / D74
Page No: 051105 / 079901
Pages: 4

Abstract: The first dedicated experiment for the rare kaon decay $K^0_L \to \pi^0 \nu \bar{\nu}$ has been performed by the E391a collaboration at the KEK 12-GeV proton synchrotron. A new upper limit of $2.1 \times 10^{-7}$ at the 90% confidence level was set for the branching ratio of the decay $K^0_L \to \pi^0 \nu \bar{\nu}$ using about 10% of the data collected during the first period of data taking.

Web-Page: http://pdglive.lbl.gov/REFERENCE_info1.brl?slacrpp=PHRVA,D74,051105R; http://link.aps.org/abstract/PRD/V74/E051105

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