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)

  • Kusaka, A.
  • Wang, C. C.
  • Adachi, I.
  • Aihara, H.
  • Arinstein, K.
  • ... Cheon, Byung Gu
  • 외 137명
Citations

WEB OF SCIENCE

32
Citations

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41

초록

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.

키워드

B-DECAYSPI(-)PI(+)PI(+) DECAYISOSPIN ANALYSISVIOLATIONMESONBELLEDETECTORPHYSICSMATRIXRHO
제목
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)
저자
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, Byung GuChistov, 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.
DOI
10.1103/PhysRevD.77.072001
발행일
2008-04
유형
Article
저널명
Physical Review D - Particles, Fields, Gravitation and Cosmology
77
7
페이지
1 ~ 25

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