Measurement of time-dependent CP violation parameters in B0 → KS0 KS0 KS0 decays at Belle

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Abstract

We measure the time-dependent CP violation parameters in B0→KS0KS0KS0 decays using 772×106BB¯ pairs collected at the ϒ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. The obtained mixing-induced and direct CP asymmetries are -0.71±0.23 (stat)±0.05 (syst) and 0.12±0.16 (stat)±0.05 (syst), respectively. These values are consistent with the Standard Model predictions. The significance of CP violation differs from zero by 2.5 standard deviations.

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Kang, K. H., Park, H., Higuchi, T., Miyabayashi, K., Sumisawa, K., Adachi, I., … Zhulanov, V. (2021). Measurement of time-dependent CP violation parameters in B0 → KS0 KS0 KS0 decays at Belle. Physical Review D, 103(3). https://doi.org/10.1103/PhysRevD.103.032003

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