TY - JOUR
T1 - Observation of the decay mode KL → π+π-e+e-
AU - Takeuchi, Y.
AU - Hemmi, Y.
AU - Kurashige, H.
AU - Matono, Y.
AU - Murakami, K.
AU - Nomura, T.
AU - Sakamoto, H.
AU - Sasao, N.
AU - Suehiro, M.
AU - Fukushima, Y.
AU - Ikegami, Y.
AU - Nakamura, T. T.
AU - Taniguchi, T.
AU - Asai, M.
PY - 1998/12/10
Y1 - 1998/12/10
N2 - 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.
AB - 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.
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U2 - 10.1016/S0370-2693(98)01359-8
DO - 10.1016/S0370-2693(98)01359-8
M3 - Article
AN - SCOPUS:0345918695
SN - 0370-2693
VL - 443
SP - 409
EP - 414
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
IS - 1-4
ER -