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

doi:10.1103/PhysRevD.47.R2644

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

Research Center for Neutrino Science (RCNS)

Research output: Contribution to journal › Article › peer-review

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 language	English
Pages (from-to)	R2644-R2647
Journal	Physical Review D
Volume	47
Issue number	7
DOIs	https://doi.org/10.1103/PhysRevD.47.R2644
Publication status	Published - 1993

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Akagi, T., Fukuhisa, R., Hemmi, Y., Inagaki, T., Ishikawa, K., Kishida, T., Kobayashi, M., Komatsubara, T. K., Kuze, M., Sai, F., Sato, T., Shinkawa, T., Suekane, F., Takamatsu, K., Toyoura, J., Yamamoto, S. S., & Yoshimura, Y. (1993). Estimation of the branching ratio of the decay KL0e+e-e+e- from the KL0e+e-X process. Physical Review D, 47(7), R2644-R2647. https://doi.org/10.1103/PhysRevD.47.R2644

@article{8e26dc03d1414370bb13a3af42ba6eaf,

title = "Estimation of the branching ratio of the decay KL0e+e-e+e- from the KL0e+e-X process",

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.",

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

year = "1993",

doi = "10.1103/PhysRevD.47.R2644",

language = "English",

volume = "47",

pages = "R2644--R2647",

journal = "Physical Review D",

issn = "0556-2821",

publisher = "American Institute of Physics",

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Akagi, T, Fukuhisa, R, Hemmi, Y, Inagaki, T, Ishikawa, K, Kishida, T, Kobayashi, M, Komatsubara, TK, Kuze, M, Sai, F, Sato, T, Shinkawa, T, Suekane, F, Takamatsu, K, Toyoura, J, Yamamoto, SS & Yoshimura, Y 1993, 'Estimation of the branching ratio of the decay KL0e+e-e+e- from the KL0e+e-X process', Physical Review D, vol. 47, no. 7, pp. R2644-R2647. https://doi.org/10.1103/PhysRevD.47.R2644

TY - JOUR

T1 - Estimation of the branching ratio of the decay KL0e+e-e+e- from the KL0e+e-X process

AU - Akagi, T.

AU - Fukuhisa, R.

AU - Hemmi, Y.

AU - Inagaki, T.

AU - Ishikawa, K.

AU - Kishida, T.

AU - Kobayashi, M.

AU - Komatsubara, T. K.

AU - Kuze, M.

AU - Sai, F.

AU - Sato, T.

AU - Shinkawa, T.

AU - Suekane, F.

AU - Takamatsu, K.

AU - Toyoura, J.

AU - Yamamoto, S. S.

AU - Yoshimura, Y.

PY - 1993

Y1 - 1993

N2 - 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.

AB - 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.

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U2 - 10.1103/PhysRevD.47.R2644

DO - 10.1103/PhysRevD.47.R2644

M3 - Article

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SN - 0556-2821

VL - 47

SP - R2644-R2647

JO - Physical Review D

JF - Physical Review D

IS - 7

ER -

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

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