Chang, P.Abe, K.Abe, K.Abe, T.Aihara, H.Asano, Y.Aulchenko, V.Aushev, T.Aziz, T.Bahinipati, S.Bakich, A.M.Ban, Y.Bay, A.Bedny, I.Bitenc, U.Bizjak, I.Bondar, A.Bozek, A.Bračko, M.Brodzicka, J.Browder, T.E.Chang, M.-C.Chao, Y.Cheon, B.G.Chistov, R.Choi, S.-K.Choi, Y.Cole, S.Danilov, M.Dash, M.Dong, L.Y.Drutskoy, A.Eidelman, S.Eiges, V.Enari, Y.Fang, F.Fratina, S.Gabyshev, N.Garmash, A.Gershon, T.Gokhroo, G.Golob, B.Guo, R.Hastings, N.C.Hayashii, H.Hazumi, M.Higuchi, T.Hinz, L.Hokuue, T.Hoshi, Y.Hou, W.-S.Hsiung, Y.B.Huang, H.-C.Inami, K.Ishikawa, A.Itoh, R.Iwasaki, H.Iwasaki, M.Iwasaki, Y.Kang, J.H.Kang, J.S.Kataoka, S.U.Katayama, N.Kawai, H.Kawasaki, T.Khan, H.R.Kichimi, H.Kim, H.J.Kim, J.H.Kim, S.K.Kim, T.H.Koppenburg, P.Korpar, S.Križan, P.Krokovny, P.Kuzmin, A.Kwon, Y.-J.Lee, S.E.Lesiak, T.Li, J.Lin, S.-W.MacNaughton, J.Majumder, G.Mandl, F.Marlow, D.Matsumoto, T.Matyja, A.Mitaroff, W.Miyake, H.Miyata, H.Mizuk, R.Mohapatra, D.Mori, T.Nagamine, T.Nagasaka, Y.Nakano, E.Nakao, M.Nakazawa, H.Natkaniec, Z.2010-11-052010-11-052010-11-05200410.1016/j.physletb.2004.07.0632-s2.0-4544376081https://infoscience.epfl.ch/handle/20.500.14299/56874We report the observation of B0 decays to the K+π-π0 final state using a data sample of 78 fb-1 collected by the Belle detector at the KEKB e+e- collider. With no assumptions about intermediate states in the decay, the branching fraction is measured to be (36.6-4.3+4.2±3.0)×10-6. We also search for B decays to intermediate two-body states with the same K+π-π0 final state. Significant B signals are observed in the ρ(770)-K+ and K*(892)+π- channels, with branching fractions of (15.1-3.3-1.5-2.1+3.4+1.4+2.0)×10-6 and (14.8-4.4-1.0-0.9+4.6+1.5+2.4) ×10-6, respectively. The first error is statistical, the second is systematic and the third is due to the largest possible interference. Contributions from other possible two-body states will be discussed. No CP asymmetry is found in the inclusive K+π-π0 or ρ-K+ modes, and we set 90% confidence level bounds on the asymmetry of -0.12<ACP<0.26 and -0.18<ACP<0.64, respectively. © 2004 Elsevier B.V. All rights reserved.text::journal::journal article::research article