1. Study of B0→D(∗)0π+π− decays
- Author
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Satpathy, A, Abe, K, Abe, R, Abe, T, Adachi, I, Aihara, H, Akatsu, M, Asano, Y, Aso, T, Aushev, T, Bakich, A.M, Ban, Y, Bay, A, Bedny, I, Behera, P.K, Bondar, A, Bozek, A, Bračko, M, Browder, T.E, Casey, B.C.K, Chang, P, Chao, Y, Chen, K.-F, Cheon, B.G, Chistov, R, Choi, S.-K, Choi, Y, Danilov, M, Dong, L.Y, Eidelman, S, Eiges, V, Fukunaga, C, Gabyshev, N, Garmash, A, Gershon, T, Golob, B, Haba, J, Hara, T, Hastings, N.C, Hayashii, H, Hazumi, M, Higuchi, I, Hinz, L, Hokuue, T, Hou, W.-S, Huang, H.-C, Igaki, T, Igarashi, Y, Iijima, T, Inami, K, Ishikawa, A, Itoh, R, Iwasaki, H, Iwasaki, Y, Jang, H.K, Kang, J.H, Kapusta, P, Kataoka, S.U, Katayama, N, Kawai, H, Kawakami, Y, Kawamura, N, Kawasaki, T, Kichimi, H, Kim, D.W, Kim, H.J, Kim, Hyunwoo, Kim, S.K, Kinoshita, K, Kobayashi, S, Krokovny, P, Kulasiri, R, Kumar, S, Kuzmin, A, Kwon, Y.-J, Lee, S.H, Li, J, Liventsev, D, Lu, R.-S, MacNaughton, J, Majumder, G, Mandl, F, Matsumoto, S, Matsumoto, T, Mitaroff, W, Miyabayashi, K, Miyake, H, Miyata, H, Mori, T, Nagamine, T, Nagasaka, Y, Nakadaira, T, Nakano, E, Nakao, M, Nakazawa, H, Nam, J.W, Natkaniec, Z, Nishida, S, Nitoh, O, Noguchi, S, Ogawa, S, Ohshima, T, Okabe, T, Okuno, S, Olsen, S.L, Onuki, Y, Ostrowicz, W, Ozaki, H, Pakhlov, P, Palka, H, Park, C.W, Park, K.S, Perroud, J.-P, Peters, M, Piilonen, L.E, Rybicki, K, Sagawa, H, Saitoh, S, Sakai, Y, Satapathy, M, Schneider, O, Schrenk, S, Schwanda, C, Semenov, S, Senyo, K, Seuster, R, Shibuya, H, Sidorov, V, Singh, J.B, Soni, N, Stanič, S, Starič, M, Sugi, A, Sumisawa, K, Sumiyoshi, T, Suzuki, S, Suzuki, S.Y, Swain, S.K, Takahashi, T, Takasaki, F, Tamai, K, Tamura, N, Tanaka, J, Tanaka, M, Taylor, G.N, Teramoto, Y, Tomura, T, Trabelsi, K, Tsuboyama, T, Tsukamoto, T, Uehara, S, Ueno, K, Uno, S, Varner, G, Wang, C.H, Wang, J.G, Wang, M.-Z, Won, E, Yabsley, B.D, Yamada, Y, Yamaguchi, A, Yamashita, Y, Yamauchi, M, Yanai, H, Yuan, Y, Zhang, C.C, Zhang, Z.P, and Zhilich, V
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Nuclear and High Energy Physics ,Color-suppressed B decays ,Branching fraction ,Factorization - Abstract
We report on a study of B0→D(∗)0π+π− decays using 29.1 fb−1 of e+e− annihilation data recorded at the ϒ(4S) resonance with the Belle detector at the KEKB storage ring. Making no assumptions about the intermediate mechanism, the branching fractions for B0→D0π+π− and B0→D∗0π+π− are determined to be (8.0±0.6±1.5)×10−4 and (6.2±1.2±1.8)×10−4, respectively. An analysis of B0→D0π+π− candidates yields to the first observation of the color-suppressed hadronic decay B0→D0ρ0 with the branching fraction (2.9±1.0±0.4)×10−4. We measure the ratio of branching fractions B(B0→D0ρ0)/B(B0→D0ω)=1.6±0.8.
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