Ushiroda, Y; Sumisawa, K; Hazumi, M; Abe, K; Abe, K; Adachi, I; Aihara, H; ... Belle Collaboration; + view all Ushiroda, Y; Sumisawa, K; Hazumi, M; Abe, K; Abe, K; Adachi, I; Aihara, H; Asano, Y; Aulchenko, V; Aushev, T; Bakich, AM; Bay, A; Bedny, I; Bitenc, U; Bizjak, I; Blyth, S; Bondar, A; Bozek, A; Bracko, M; Brodzicka, J; Browder, TE; Chang, MC; Chang, P; Chao, Y; Chen, A; Chen, KF; Chen, WT; Cheon, BG; Choi, SK; Choi, Y; Chuvikov, A; Cole, S; Dalseno, J; Danilov, M; Dash, M; Dragic, J; Eidelman, S; Fang, F; Fratina, S; Gabyshev, N; Gershon, T; Gokhroo, G; Gorisek, A; Haba, J; Hara, K; Hastings, NC; Hayasaka, K; Hayashii, H; Higuchi, T; Hinz, L; Hokuue, T; Hoshi, Y; Hou, S; Hou, WS; Hsiung, YB; Iijima, T; Imoto, A; Inami, K; Ishikawa, A; Ishino, H; Itoh, R; Iwasaki, M; Iwasaki, Y; Kang, JH; Kang, JS; Kapusta, P; Katayama, N; Kawai, H; Kawasaki, T; Khan, HR; Kichimi, H; Kim, HJ; Kim, SM; Kinoshita, K; Krizan, P; Krokovny, P; Kumar, S; Kuo, CC; Kusaka, A; Kuzmin, A; Kwon, YJ; Leder, G; Lesiak, T; Li, J; Limosani, A; Lin, SW; Liventsev, D; Mandl, F; Matsumoto, T; Mikami, Y; Mitaroff, W; Miyabayashi, K; Miyake, H; Miyata, H; Mohapatra, D; Moloney, GR; Nagamine, T; Nakano, E; Nakao, M; Nishida, S; Nitoh, O; Nozaki, T; Ogawa, S; Ohshima, T; Okabe, T; Okuno, S; Olsen, SL; Ostrowicz, W; Ozaki, H; Pakhlov, P; Palka, H; Park, CW; Parslow, N; Peak, LS; Pestotnik, R; Piilonen, LE; Sagawa, H; Sakai, Y; Sato, N; Schietinger, T; Schneider, O; Schwartz, AJ; Senyo, K; Sevior, ME; Shibata, T; Shibuya, H; Singh, JB; Somov, A; Soni, N; Stamen, R; Stanic, S; Staric, M; Sumiyoshi, T; Suzuki, S; Tajima, O; Takasaki, F; Tamai, K; Tamura, N; Tanaka, M; Teramoto, Y; Tian, XC; Trabelsi, K; Tsuboyama, T; Tsukamoto, T; Uehara, S; Uglov, T; Uno, S; Urquijo, P; Varner, G; Varvell, KE; Villa, S; Wang, CC; Wang, CH; Watanabe, M; Watanabe, Y; Xie, QL; Yamaguchi, A; Yamashita, Y; Yamauchi, M; Yang, HY; Ying, J; Zhang, J; Zhang, LM; Zhang, ZP; Zontar, D; Belle Collaboration; - view fewer (2005) Measurement of the time-dependent CP-violating asymmetry in B-0 -> K-S(0)pi(0)gamma decays. PHYS REV LETT , 94 (23) , Article 231601. 10.1103/PhysRevLett.94.231601.

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Abstract

We present a new measurement of CP-violation parameters in B-0-> K(S)(0)pi(0)gamma decay based on a sample of 275x10(6) B (B) over bar pairs collected at the Upsilon(4S) resonance with the Belle detector at the KEKB energy-asymmetric e(+)e(-) collider. One of the B mesons is fully reconstructed in the B-0-> K(S)(0)pi(0)gamma decay. The flavor of the accompanying B meson is identified from its decay products. CP-violation parameters are obtained from the asymmetry in the distribution of the proper time intervals between the two B decays. We obtain S(KS)(0)pi(0)gamma=-0.58(-0.38)(+0.46)(stat)+/- 0.11(syst) and A(KS)(0)pi(0)gamma=+0.03 +/- 0.34(stat)+/- 0.11(syst), for the K(S)(0)pi(0) invariant mass covering the full range up to 1.8 GeV/c(2). We also measure the CP-violation parameters for the case B-0-> K-*0(-> K(S)(0)pi(0))gamma and obtain S(K)(*0)gamma=-0.79(-0.50)(+0.63)(stat)+/- 0.10(syst) for A(K)(*0)gamma fixed at 0.

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