Estimation of the branching ratio of the decay KL0e+e-e+e- from the KL0e+e-X process

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

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12 Citations (Scopus)

Abstract

In an experiment to search for the decay KL0ee using the 12-GeV Proton Synchrotron at KEK, we observed 18 events with the e+e- effective mass greater than 470 MeV/c2. They are presumed to come mainly from the decay KL0e+e-e+e-. Subtracting the background from the decay KL0ee and the external conversion of in the decays KL0 and KL0ee, the branching ratio of the decay KL0e+e-e+e- is estimated to be (621)×10-8. It is consistent with the previous experimental values.

Original languageEnglish
Pages (from-to)R2644-R2647
JournalPhysical Review D
Volume47
Issue number7
DOIs
Publication statusPublished - 1993

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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