Fujikawa, M.Yusa, Y.Dalseno, J.Hazumi, M.Sumisawa, K.Aihara, H.Arinstein, K.Aulchenko, V.Aushev, T.Aziz, T.Bakich, A.M.Balagura, V.Barberio, E.Belous, K.Bhardwaj, V.Bischofberger, M.Bondar, A.Bozek, A.Bračko, M.Browder, T.E.Chao, Y.Chen, A.Cheon, B.G.Choi, S.-K.Choi, Y.Dungel, W.Eidelman, S.Feindt, M.Goldenzweig, P.Ha, H.Haba, J.Han, B.-Y.Hara, K.Hasegawa, Y.Hayasaka, K.Hayashii, H.Horii, Y.Hoshi, Y.Hou, W.-S.Hyun, H.J.Iijima, T.Inami, K.Ishino, H.Itoh, R.Iwasaki, M.Iwasaki, Y.Julius, T.Kang, J.H.Kawai, H.Kiesling, C.Kim, H.O.Kim, S.K.Kim, Y.I.Kim, Y.J.Kinoshita, K.Ko, B.R.Korpar, S.Kreps, M.Krokovny, P.Kuhr, T.Kumar, R.Kumita, T.Kwon, Y.-J.Kyeong, S.-H.Lee, S.-H.Li, J.Liu, C.Liventsev, D.Louvot, R.McOnie, S.Miyabayashi, K.Miyata, H.Miyazaki, Y.Mori, T.Nagasaka, Y.Nakano, E.Nakao, M.Nishida, S.Nishimura, K.Nitoh, O.Nozaki, T.Ohshima, T.Okuno, S.Olsen, S.L.Ozaki, H.Pakhlov, P.Pakhlova, G.Park, C.W.Park, H.Park, H.K.Pestotnik, R.Piilonen, L.E.Rozanska, M.Sakai, Y.Schneider, O.Schwartz, A.J.Senyo, K.Shapkin, M.Shebalin, V.Shen, C.P.Shiu, J.-G.Singh, J.B.Sokolov, A.Solovieva, E.Stanič, S.Starič, M.Sumiyoshi, T.Taylor, G.N.Teramoto, Y.Trabelsi, K.Uehara, S.Unno, Y.Uno, S.Urquijo, P.Usov, Y.Varner, G.Vervink, K.Vinokurova, A.Wang, C.H.Wang, P.Watanabe, Y.Wedd, R.Won, E.Yabsley, B.D.Yamashita, Y.Zhang, C.C.Zhang, Z.P.Zupanc, A.2010-11-052010-11-052010-11-05201010.1103/PhysRevD.81.0111012-s2.0-77649138861https://infoscience.epfl.ch/handle/20.500.14299/56804WOS:000274002800001We report measurements of CP violation parameters in B0→K0π0 decays based on a data sample of 657×106BB̄ pairs collected with the Belle detector at the KEKB e+e- asymmetric-energy collider. We use B0→KS0π0 decays for both mixing-induced and direct CP violating asymmetry measurements and B0→KL0π0 decays for the direct CP violation measurement. The CP violation parameters obtained are sin 2 1eff=+0.67±0. 31(stat)±0.08(syst) and AK0π0=+0.14±0.13(stat)±0. 06(syst). The branching fraction of B0→K0π0 decay is measured to be B(B0→K0π0)=(8.7±0.5(stat.)±0.6(syst.))×10 -6. The observed AK0π0 value differs by 1.9 standard deviations from the value expected from an isospin sum rule. © 2010 The American Physical Society.Belle DetectorB DecaysViolationPhysicstext::journal::journal article::research article