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Measurement of CP asymmetries and branching fractions in a time-dependent Dalitz analysis of B-0 ->(rho pi)(0) and a constraint on the quark mixing angle phi(2)
- Authors
- Kusaka, A.; Wang, C. C.; Adachi, I.; Aihara, H.; Arinstein, K.; Aulchenko, V.; Aushev, T.; Bakich, A. M.; Balagura, V.; Barberio, E.; Bedny, I.; Belous, K.; Bitenc, U.; Bondar, A.; Bozek, A.; Bracko, M.; Browder, T. E.; Chang, P.; Chao, Y.; Chen, A.; Chen, W. T.; Cheon, B. G.; Chistov, R.; Cho, I. -S.; Choi, S. -K.; Choi, Y.; Dalseno, J.; Dash, M.; Eidelman, S.; Gabyshev, N.; Golob, B.; Haba, J.; Hara, K.; Hayasaka, K.; Hayashii, H.; Hazumi, M.; Heffernan, D.; Hoshi, Y.; Hou, W. -S.; Hyun, H. J.; Iijima, T.; Inami, K.; Ishikawa, A.; Ishino, H.; Itoh, R.; Iwasaki, M.; Iwasaki, Y.; Kah, D. H.; Kang, J. H.; Kawai, H.; Kawasaki, T.; Kichimi, H.; Kim, H. O.; Kim, S. K.; Kim, Y. J.; Kinoshita, K.; Korpar, S.; Krizan, P.; Krokovny, P.; Kumar, R.; Kuo, C. C.; Kuzmin, A.; Kwon, Y. -J.; Lee, J. S.; Lee, M. J.; Lee, S. E.; Lesiak, T.; Limosani, A.; Lin, S. -W.; Liu, Y.; Liventsev, D.; Mandl, F.; Matyja, A.; McOnie, S.; Medvedeva, T.; Miyabayashi, K.; Miyake, H.; Miyata, H.; Miyazaki, Y.; Mizuk, R.; Moloney, G. R.; Nakano, E.; Nakao, M.; Nishida, S.; Nitoh, O.; Noguchi, S.; Nozaki, T.; Ogawa, S.; Ohshima, T.; Okuno, S.; Ozaki, H.; Pakhlova, G.; Park, C. W.; Park, H.; Peak, L. S.; Pestotnik, R.; Piilonen, L. E.; Sahoo, H.; Sakai, Y.; Schneider, O.; Schwanda, C.; Schwartz, A. J.; Senyo, K.; Sevior, M. E.; Shapkin, M.; Shen, C. P.; Shibuya, H.; Shwartz, B.; Singh, J. B.; Somov, A.; Stanic, S.; Staric, M.; Sumiyoshi, T.; Suzuki, S.; Suzuki, S. Y.; Takasaki, F.; Tamai, K.; Tamura, N.; Tanaka, M.; Teramoto, Y.; Tikhomirov, I.; Trabelsi, K.; Uehara, S.; Ueno, K.; Uglov, T.; Unno, Y.; Uno, S.; Urquijo, P.; Varner, G.; Varvell, K. E.; Vervink, K.; Villa, S.; Wang, C. H.; Wang, M. -Z.; Wang, P.; Wang, X. L.; Watanabe, Y.; Won, E.; Yamashita, Y.; Zhang, Z. P.; Zhulanov, V.; Zupanc, A.; Zyukova, O.
- Issue Date
- 4월-2008
- Publisher
- AMER PHYSICAL SOC
- Citation
- PHYSICAL REVIEW D, v.77, no.7
- Indexed
- SCIE
SCOPUS
- Journal Title
- PHYSICAL REVIEW D
- Volume
- 77
- Number
- 7
- ISSN
- 1550-7998
- Abstract
- We present the results of a time-dependent Dalitz plot analysis of B-0 ->pi(+)pi(-)pi(0) decays based on a 414 fb(-1) data sample that contains 449x10(6)B (B) over bar pairs. The data were collected on the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric energy e(+)e(-) collider. Combining our analysis with information on charged B decay modes, we perform a full Dalitz and isospin analysis and obtain a constraint on the quark mixing angle phi(2), 68 degrees <phi(2)< 95 degrees at the 68.3% confidence level for the phi(2) solution consistent with the standard model. A large standard-model-disfavored region also remains. The branching fractions for the decay processes B-0 ->rho(+/-)(770)pi(-/+) and B-0 ->rho(0)(770)pi(0) are measured to be (22.6 +/- 1.1[stat]+/- 4.4[syst])x10(-6) and (3.0 +/- 0.5[stat]+/- 0.7[syst])x10(-6), respectively. These are the first branching fraction measurements of the process B-0 ->rho(770)pi with the lowest resonance rho(770) explicitly separated from the radial excitations.
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