Measurement of time-dependent C P violation parameters in B 0 → K 0 S K 0 S K 0 S decays at Belle

Abstract

We measure the time-dependent CP violation parameters in B0 → K0 SK0 SK0 S decays using 772 × 106BB¯ pairs collected at the ϒð4SÞ resonance with the Belle detector at the KEKB asymmetric-energy eþe− collider. The obtained mixing-induced and direct CP asymmetries are −0.71 0.23 ðstatÞ 0.05 ðsystÞ and 0.12 0.16 ðstatÞ 0.05 ðsystÞ, respectively. These values are consistent with the Standard Model predictions. The significance of CP violation differs from zero by 2.5 standard deviations.