Measurement of the branching ratio and a study of CP for the leptonic decay KL?e+e-e+e-

P. Gu; P. Haas; W. P. Hogan; S. K. Kim; J. N. Matthews; S. S. Myung; S. Schnetzer; G. B. Thomson; Y. Zou; K. Arisaka; D. Roberts; W. Slater; M. Weaver; R. A. Briere; E. Cheu; D. A. Harris; K. S. McFarland; A. Roodman; B. Schwingenheuer; S. V. Somalwar; Y. W. Wah; B. Winstein; R. Winston; A. R. Barker; E. C. Swallow; G. J. Bock; R. Coleman; M. Crisler; J. Enagonio; R. Ford; Y. B. Hsiung; D. A. Jensen; E. Ramberg; R. Tschirhart; E. M. Collins; G. D. Gollin; T. Nakaya; T. Yamanaka

doi:10.1103/PhysRevLett.72.3000

Measurement of the branching ratio and a study of CP for the leptonic decay KL?e+e-e+e-

P. Gu, P. Haas, W. P. Hogan, S. K. Kim, J. N. Matthews, S. S. Myung, S. Schnetzer, G. B. Thomson, Y. Zou, K. Arisaka, D. Roberts, W. Slater, M. Weaver, R. A. Briere, E. Cheu, D. A. Harris, K. S. McFarland, A. Roodman, B. Schwingenheuer, S. V. SomalwarY. W. Wah, B. Winstein, R. Winston, A. R. Barker, E. C. Swallow, G. J. Bock, R. Coleman, M. Crisler, J. Enagonio, R. Ford, Y. B. Hsiung, D. A. Jensen, E. Ramberg, R. Tschirhart, E. M. Collins, G. D. Gollin, T. Nakaya, T. Yamanaka

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Abstract

We have determined the branching ratio of KL?e+e-e+e- based on the observation of 27 four-electron final state events with 0.36 estimated background event, B(KL?e+e-e+e-) =[3.960.78(stat)0.32(syst)]×10-8. Using the distribution of the angle between the e+e- pair decay planes, we find that the decay proceeds predominantly through the K2(CP=-1) state.

Original language	English (US)
Pages (from-to)	3000-3003
Number of pages	4
Journal	Physical review letters
Volume	72
Issue number	19
DOIs	https://doi.org/10.1103/PhysRevLett.72.3000
State	Published - 1994
Externally published	Yes

ASJC Scopus subject areas

General Physics and Astronomy

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10.1103/PhysRevLett.72.3000

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Gu, P., Haas, P., Hogan, W. P., Kim, S. K., Matthews, J. N., Myung, S. S., Schnetzer, S., Thomson, G. B., Zou, Y., Arisaka, K., Roberts, D., Slater, W., Weaver, M., Briere, R. A., Cheu, E., Harris, D. A., McFarland, K. S., Roodman, A., Schwingenheuer, B., ... Yamanaka, T. (1994). Measurement of the branching ratio and a study of CP for the leptonic decay KL?e+e-e+e-. Physical review letters, 72(19), 3000-3003. https://doi.org/10.1103/PhysRevLett.72.3000

Gu, P, Haas, P, Hogan, WP, Kim, SK, Matthews, JN, Myung, SS, Schnetzer, S, Thomson, GB, Zou, Y, Arisaka, K, Roberts, D, Slater, W, Weaver, M, Briere, RA, Cheu, E, Harris, DA, McFarland, KS, Roodman, A, Schwingenheuer, B, Somalwar, SV, Wah, YW, Winstein, B, Winston, R, Barker, AR, Swallow, EC, Bock, GJ, Coleman, R, Crisler, M, Enagonio, J, Ford, R, Hsiung, YB, Jensen, DA, Ramberg, E, Tschirhart, R, Collins, EM, Gollin, GD, Nakaya, T & Yamanaka, T 1994, 'Measurement of the branching ratio and a study of CP for the leptonic decay KL?e+e-e+e-', Physical review letters, vol. 72, no. 19, pp. 3000-3003. https://doi.org/10.1103/PhysRevLett.72.3000

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title = "Measurement of the branching ratio and a study of CP for the leptonic decay KL?e+e-e+e-",

abstract = "We have determined the branching ratio of KL?e+e-e+e- based on the observation of 27 four-electron final state events with 0.36 estimated background event, B(KL?e+e-e+e-) =[3.960.78(stat)0.32(syst)]×10-8. Using the distribution of the angle between the e+e- pair decay planes, we find that the decay proceeds predominantly through the K2(CP=-1) state.",

author = "P. Gu and P. Haas and Hogan, {W. P.} and Kim, {S. K.} and Matthews, {J. N.} and Myung, {S. S.} and S. Schnetzer and Thomson, {G. B.} and Y. Zou and K. Arisaka and D. Roberts and W. Slater and M. Weaver and Briere, {R. A.} and E. Cheu and Harris, {D. A.} and McFarland, {K. S.} and A. Roodman and B. Schwingenheuer and Somalwar, {S. V.} and Wah, {Y. W.} and B. Winstein and R. Winston and Barker, {A. R.} and Swallow, {E. C.} and Bock, {G. J.} and R. Coleman and M. Crisler and J. Enagonio and R. Ford and Hsiung, {Y. B.} and Jensen, {D. A.} and E. Ramberg and R. Tschirhart and Collins, {E. M.} and Gollin, {G. D.} and T. Nakaya and T. Yamanaka",

year = "1994",

doi = "10.1103/PhysRevLett.72.3000",

language = "English (US)",

volume = "72",

pages = "3000--3003",

journal = "Physical review letters",

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TY - JOUR

T1 - Measurement of the branching ratio and a study of CP for the leptonic decay KL?e+e-e+e-

AU - Gu, P.

AU - Haas, P.

AU - Hogan, W. P.

AU - Kim, S. K.

AU - Matthews, J. N.

AU - Myung, S. S.

AU - Schnetzer, S.

AU - Thomson, G. B.

AU - Zou, Y.

AU - Arisaka, K.

AU - Roberts, D.

AU - Slater, W.

AU - Weaver, M.

AU - Briere, R. A.

AU - Cheu, E.

AU - Harris, D. A.

AU - McFarland, K. S.

AU - Roodman, A.

AU - Schwingenheuer, B.

AU - Somalwar, S. V.

AU - Wah, Y. W.

AU - Winstein, B.

AU - Winston, R.

AU - Barker, A. R.

AU - Swallow, E. C.

AU - Bock, G. J.

AU - Coleman, R.

AU - Crisler, M.

AU - Enagonio, J.

AU - Ford, R.

AU - Hsiung, Y. B.

AU - Jensen, D. A.

AU - Ramberg, E.

AU - Tschirhart, R.

AU - Collins, E. M.

AU - Gollin, G. D.

AU - Nakaya, T.

AU - Yamanaka, T.

PY - 1994

Y1 - 1994

N2 - We have determined the branching ratio of KL?e+e-e+e- based on the observation of 27 four-electron final state events with 0.36 estimated background event, B(KL?e+e-e+e-) =[3.960.78(stat)0.32(syst)]×10-8. Using the distribution of the angle between the e+e- pair decay planes, we find that the decay proceeds predominantly through the K2(CP=-1) state.

AB - We have determined the branching ratio of KL?e+e-e+e- based on the observation of 27 four-electron final state events with 0.36 estimated background event, B(KL?e+e-e+e-) =[3.960.78(stat)0.32(syst)]×10-8. Using the distribution of the angle between the e+e- pair decay planes, we find that the decay proceeds predominantly through the K2(CP=-1) state.

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DO - 10.1103/PhysRevLett.72.3000

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SN - 0031-9007

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SP - 3000

EP - 3003

JO - Physical review letters

JF - Physical review letters

IS - 19

ER -

Measurement of the branching ratio and a study of CP for the leptonic decay KL?e+e-e+e-

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