Search for KL0'e and KL0'ee decays

T. Inagaki, M. Kobayashi, T. Sato, T. Shinkawa, F. Suekane, K. Takamatsu, Y. Yoshimura, K. Ishikawa, T. Kishida, T. K. Komatsubara, M. Kuze, F. Sai, J. Toyoura, S. S. Yamamoto, Y. Hemmi

Research output: Contribution to journalArticlepeer-review

29 Citations (Scopus)


We report on the present status of a search for the rare decays KL0'e and KL0'ee at the KEK 12-GeV Proton Synchrotron. We found no KL0'e or KL0'ee events and found 54 KL0' events. The upper limits of the KL0'e and KL0'ee branching ratios are B(KL0'e)<4.3×10-10 and B(KL0'ee)<5.6×10-10 at 90% confidence level. The 54 KL0' events correspond to an absolute branching ratio of (8.41.1)×10-9.

Original languageEnglish
Pages (from-to)1712-1715
Number of pages4
JournalPhysical Review D
Issue number5
Publication statusPublished - 1989


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