We have searched for CP violation in the decays D-0 -> (KSP0)-P-0 where P-0 denotes a neutral pseudoscalar meson that is either a pi(0), eta, or eta' using KEKB asymmetric- energy e(+)e(-) collision data corresponding to an integrated luminosity of 791 fb(-1) collected with the Belle detector. No evidence of significant CP violation is observed. We report the most precise CP asymmetry measurement in the decay D-0 -> K-S(0)pi(0) to date: A(CP)D(0) -> K-S(0)pi(0) = (-0.28 +/- 0.19 +/- 0.10)%. We also report the first measurements of CP asymmetries in the decays D-0 -> K-S(0) -> and D-0 -> K-S(0)eta': A(CP)(D0 -> KS0 eta) =(+0.54 +/- 0.51 +/- 0.16)% and A(CP)(D0 -> KS0 eta') = (+0.98 +/- 0.67 +/- 0.14)%, respectively.
Matthias Finger, Konstantin Androsov, Qian Wang, Jan Steggemann, Yiming Li, Anna Mascellani, Varun Sharma, Xin Chen, Rakesh Chawla, Matteo Galli
Matthias Finger, Konstantin Androsov, Jan Steggemann, Qian Wang, Anna Mascellani, Yiming Li, Varun Sharma, Xin Chen, Rakesh Chawla, Matteo Galli