Abe, K; Abe, K; Abe, N; Abe, T; Adachi, I; Aihara, H; Akai, K; ... Belle Collaboration; + view all Abe, K; Abe, K; Abe, N; Abe, T; Adachi, I; Aihara, H; Akai, K; Akatsu, M; Akemoto, M; Asano, Y; Aso, T; Aulchenko, V; Aushev, T; Bakich, AM; Ban, Y; Banerjee, S; Bay, A; Bedny, I; Bizjak, I; Bondar, A; Bozek, A; Bracko, M; Browder, TE; Chao, Y; Chen, KF; Cheon, BG; Chistov, R; Choi, SK; Choi, Y; Chuvikov, A; Cole, S; Danilov, M; Dragic, J; Drutskoy, A; Eidelman, S; Eiges, V; Enari, Y; Epifanov, D; Flanagan, J; Furukawa, K; Gabyshev, N; Garmash, A; Gershon, T; Golob, B; Haba, J; Hara, K; Hastings, NC; Hayashii, H; Hazumi, M; Hinz, L; Hokuue, T; Hoshi, Y; Hou, WS; Hsiung, YB; Huang, HC; Iijima, T; Ikeda, H; Inami, K; Ishikawa, A; Ishino, H; Itoh, R; Iwasaki, H; Iwasaki, M; Iwasaki, Y; Kakuno, H; Kamitani, T; Kang, JH; Kang, JS; Kapusta, P; Kataoka, SU; Katayama, N; Kawai, H; Kawasaki, T; Kibayashi, A; Kichimi, H; Kikutani, E; Kim, HJ; Kim, JH; Kim, SK; Kinoshita, K; Koppenburg, P; Korpar, S; Krizan, P; Krokovny, P; Kumar, S; Kuzmin, A; Kwon, YJ; Lange, JS; Leder, G; Lee, SH; Lee, YJ; Lesiak, T; Li, J; Limosani, A; Lin, SW; Liventsev, D; MacNaughton, J; Mandl, F; Marlow, D; Matsumoto, H; Matsumoto, T; Matyja, A; Michizono, S; Mimashi, T; Mitaroff, W; Miyabayashi, K; Miyake, H; Miyata, H; Mohapatra, D; Moloney, GR; Murakami, A; Nagamine, T; Nagasaka, Y; Nakadaira, T; Nakamura, TT; Nakano, E; Nakao, M; Nakazawa, H; Natkaniec, Z; Neichi, K; Nishida, S; Nitoh, O; Noguchi, S; Nozaki, T; Ogawa, S; Ogawa, Y; Ohmi, K; Ohshima, T; Ohuchi, N; Oide, K; Okabe, T; Okuno, S; Olsen, SL; Ostrowicz, W; Ozaki, H; Pakhlov, P; Palka, H; Park, CW; Park, H; Parslow, N; Piilonen, LE; Root, N; Rozanska, M; Sagawa, H; Sakai, Y; Schneider, O; Schumann, J; Schwanda, C; Schwartz, AJ; Semenov, S; Senyo, K; Shibuya, H; Shidara, T; Shwartz, B; Sidorov, V; Singh, JB; Soni, N; Stamen, R; Stanic, S; Staric, M; Sugahara, R; Sumisawa, K; Sumiyoshi, T; Suzuki, K; Suzuki, S; Tajima, O; Takasaki, F; Tamai, K; Tamura, N; Tanaka, M; Tawada, M; Teramoto, Y; Tomura, T; Tsuboyama, T; Tsukamoto, T; Uehara, S; Uglov, T; Ueno, K; Unno, Y; Uno, S; Varner, G; Varvell, KE; Wang, CC; Wang, CH; Wang, MZ; Watanabe, Y; Yabsley, BD; Yamada, Y; Yamaguchi, A; Yamashita, Y; Yamauchi, M; Yanai, H; Yang, HY; Ying, J; Yokoyama, M; Yoshida, M; Yusa, Y; Zhang, CC; Zhang, ZP; Ziegler, T; Zontar, D; Zurcher, D; Belle Collaboration; - view fewer (2004) Observation of large CP violation and evidence for direct CP violation in B0+p- decays. PHYS REV LETT , 93 (2) , Article 021601. 10.1103/PhysRevLett.93.021601.

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Abstract

We report the first observation of CP violation in B<SUP>0+p- decays based on 152x106 U(4S)B (B) over bar decays collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. We reconstruct a B0+p- CP eigenstate and identify the flavor of the accompanying B meson from its decay products. From the distribution of the time intervals between the two B meson decay points, we obtain A</SUP><INF>pp</INF><SUP>=+0.580.15(stat)0.07(syst) and S</SUP><INF>pp</INF><SUP>=-1.000.21(stat)0.07(syst). We rule out the CP-conserving case, A</SUP><INF>pp</INF><SUP>=S</SUP><INF>pp</INF><SUP>=0, at a level of 5.2 standard deviations. We also find evidence for direct CP violation with a significance at or greater than 3.2 standard deviations for any S</SUP><INF>pp</INF> value.

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