Observation of the decay mode KL → π+π-e+e-

Y. Takeuchi, Y. Hemmi, H. Kurashige, Y. Matono, K. Murakami, T. Nomura, H. Sakamoto, N. Sasao, M. Suehiro, Y. Fukushima, Y. Ikegami, T. T. Nakamura, T. Taniguchi, M. Asai

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Abstract

We report on results of an experimental search for the KL → π+π-e+e- decay mode. We found 13.5 ± 4.0 events and determined its branching ratio to be (4.4 ± 1.3(stat.) ± 0.5(syst.)) × 10-7. The result agrees well with the theoretical prediction.

Original languageEnglish
Pages (from-to)409-414
Number of pages6
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume443
Issue number1-4
DOIs
Publication statusPublished - Dec 10 1998

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ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Takeuchi, Y., Hemmi, Y., Kurashige, H., Matono, Y., Murakami, K., Nomura, T., Sakamoto, H., Sasao, N., Suehiro, M., Fukushima, Y., Ikegami, Y., Nakamura, T. T., Taniguchi, T., & Asai, M. (1998). Observation of the decay mode KL → π+π-e+e-. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 443(1-4), 409-414. https://doi.org/10.1016/S0370-2693(98)01359-8