Belle CollaborationDalseno, J.Adachi, I.Aihara, H.Asner, D. M.Aulchenko, V.Aushev, T.Bakich, A. M.Bay, A.Belous, K.Bhuyan, B.Bozek, A.Bracko, M.Brovchenko, O.Browder, T. E.Chekelian, V.Chen, A.Chen, P.Cheon, B. G.Chilikin, K.Chistov, R.Cho, I.-S.Cho, K.Choi, Y.Dolezal, Z.Drasal, Z.Eidelman, S.Fast, J. E.Gaur, V.Gabyshev, N.Garmash, A.Goh, Y. M.Hayashii, H.Horii, Y.Hoshi, Y.Hou, W.-S.Hsiung, Y. B.Hyun, H. J.Iijima, T.Inami, K.Ishikawa, A.Itoh, R.Iwabuchi, M.Iwasaki, Y.Iwashita, T.Julius, T.Kang, J. H.Kiesling, C.Kim, H. O.Kim, J. B.Kim, Y. J.Kinoshita, K.Ko, B. R.Koblitz, S.Kodys, P.Korpar, S.Krizan, P.Krokovny, P.Kronenbitter, B.Kuhr, T.Kumita, T.Kwon, Y.-J.Lee, S.-H.Li, J.Libby, J.Liu, C.Liu, Z. Q.Louvot, R.Macnaughton, J.Matvienko, D.Mconie, S.Miyabayashi, K.Miyata, H.Miyazaki, Y.Mohanty, G. B.Mohapatra, D.Moll, A.Muramatsu, N.Nakao, M.Natkaniec, Z.Nedelkovska, E.Ng, C.Nishida, S.Nishimura, K.Nitoh, O.Ogawa, S.Ohshima, T.Okuno, S.Pakhlov, P.Pakhlova, G.Park, C. W.Park, H. K.Pedlar, T. K.Pestotnik, R.Petric, M.Piilonen, L. E.Prim, M.Prothmann, K.Ritter, M.Roehrken, M.Sahoo, H.Sakai, Y.Sanuki, T.Schneider, O.Schwanda, C.Schwartz, A. J.Senyo, K.Seon, O.Sevior, M. E.Shapkin, M.Shebalin, V.Shen, C. P.Shibata, T.-A.Shiu, J.-G.Sibidanov, A.Simon, F.Smerkol, P.Sohn, Y.-S.Solovieva, E.Staric, M.Sumihama, M.Sumiyoshi, T.Tatishvili, G.Teramoto, Y.Trabelsi, K.Uchida, M.Uehara, S.Unno, Y.Uno, S.Urquijo, P.Usov, Y.Vanhoefer, P.Varner, G.Wang, C. H.Wang, P.Watanabe, M.Watanabe, Y.Williams, K. M.Won, E.Yabsley, B. D.Yamashita, Y.Zhang, Z. P.Zhilich, V.Zhulanov, V.Zupanc, A.2013-02-272013-02-272013-02-27201210.1103/PhysRevD.86.092012https://infoscience.epfl.ch/handle/20.500.14299/89240WOS:000311547400003We present a measurement of the branching fraction and time-dependent CP violation parameters in B-0 -> a(1)(+/-)(1260)pi(-/+) decays. The results are obtained from the final data sample containing 772 x 10(6) B (B) over bar pairs collected at the Gamma(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We obtain the product branching fraction B(B-0 -> a(1)(+/-)(1260)pi(-/+)) x B(a(1)(+/-)(1260) -> pi(+/-)pi(-/+)pi(+/-)) = (11.1 +/- 1.0(stat) +/- 1.4(syst)) x 10(-6) and an upper limit on the product branching fraction for a possible decay with the same final state B(B-0 -> a(2)(+/-)(1320)pi(-/+)) x B(a(2)(+/-)(1320) -> pi(+/-)pi(-/+)pi(+/-)) <2.2x10(-6) at 90% CL. In a time-dependent measurement to extract CP asymmetries, we obtain the CP violation parameters A(CP) = -0.06 x 0.05(stat) +/- 0.07(syst), C-CP = -0.01 +/- 0.11(stat) +/- 0.09(syst), S-CP = -0.51 +/- 0.14(stat) +/- 0.08(syst), representing time-and flavor-integrated direct, flavor-dependent direct and mixing-induced CP violation, respectively. Simultaneously, we also extract the CP-conserving parameters Delta C = +0.54 +/- 0.11(stat) +/- 0.07(syst), Delta S = -0.09 +/- 0.14(stat) +/- 0.06(syst), which, respectively, describe a rate difference and strong phase difference between the decay channels where the a(1)(+/-) does not contain the spectator quark and those where it does. We find first evidence of mixing-induced CP violation in B-0 -> a(1)(+/-)(1260)pi(-/+) decays with 3.1 sigma significance. The rate where the a(1)(+/-) 1 does not contain the spectator quark from the B meson is found to dominate the rate where it does at the 4.1 sigma level. However, there is no evidence for either time-and flavor-integrated direct CP violation or flavor-dependent direct CP violation.text::journal::journal article::research article