APS » PROLA » Phys. Rev. Lett. » Volume 72 » Issue 19

Phys. Rev. Lett. 72, 3000 - 3003 (1994)

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

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P. Gu et al.
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Received 24 February 1994

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-) =[3.96±0.78(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.


©1994 The American Physical Society

URL: http://link.aps.org/abstract/PRL/v72/p3000
DOI: 10.1103/PhysRevLett.72.3000
PACS: 13.20.Eb, 11.30.Er, 13.40.Hq, 14.40.Aq

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