Search for CP violstion in the K0 → 3 π0. decay

Out of a total of 1.8 × 10 6 photographs of the 180 liter xenon bubble chamber exposed to a K + beam with 0.85 GeV/ c momentum, 632 identified K 0 → 3 π 0 decays were selected. The ratio of the CP violating to the CP conserving amplitudes η 000 = A( K 0 s → 3π 0) A( K 0 L → 3π 0) = (−0.08 ± 0.18) +...

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Published in:Physics letters. B 1983-08, Vol.128 (1), p.129-132
Main Authors: Barmin, V.V., Barylov, V.G., Chistyakova, T.A., Chuvilo, I.V., Davidenko, G.V., Demidov, V.S., Dolgolenko, A.G., Ergakov, V.A., Golubchikov, V.M., Meshkovsky, A.G., Mirosidi, G.S., Moskalev, V.I., Shebanov, V.A., Shishov, N.N., Trebukhovsky, Yu.V., Zombrovskaya, N.K., Baldo-Ceolin, M., Calimani, E., Ciampolillo, S., Mattioli, F., Miari, G., Sconza, A.
Format: Article
Language:English
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Summary:Out of a total of 1.8 × 10 6 photographs of the 180 liter xenon bubble chamber exposed to a K + beam with 0.85 GeV/ c momentum, 632 identified K 0 → 3 π 0 decays were selected. The ratio of the CP violating to the CP conserving amplitudes η 000 = A( K 0 s → 3π 0) A( K 0 L → 3π 0) = (−0.08 ± 0.18) + i(−0.05 ± 0.27) was obtained. This result is compatible within one standard deviation with the value η 000 = 0 and is independent of any assumption about CPT invariance. Assuming CPT invariance and ΔI< 5 2 we obtained | η 000| 2
ISSN:0370-2693
1873-2445
DOI:10.1016/0370-2693(83)90088-6