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| 題名: | First observation of CP violation and improved measurement of the branching fraction and polarization of B0→D*+ D*- decays |
| 作者: | 陳鎰鋒;Kronenbitter, B;Adachi, I;Arinstein, K;Aziz, T;Bakich, A. M;Bhardwaj, V;Bhuyan, B;Bozek, A;Chekelian, V;Chen, A;Chen, P;Chistov, R;Cho, I.-S;Cho, K;Choi, Y;Dolezal, Z;Drutskoy, A;Eidelman, S;Fast, J. E;Feindt, M;Gabyshev, N;Goh, Y. M;Hayashii, H;Horii, Y;Hoshi, Y;Hou, W.-S;Hsiung, Y. B;Iijima, T;Inami, K;Itoh, R;Julius, T;Kang, J. H;Kapusta, P;Kawasaki, T;Kiesling, C;Kim, H. O;Kim, J. B;Kim, K. T;Kim, M. J;Kinoshita, K;Ko, B. R;Kodys, P;Korpar, S;Kouzes, R. T;Kuhr, T;Kumita, T;Kwon, Y.-J;Lee, S.-H;Li, J;Li, Y;Liu, Z. Q;Mconie, S;Miyabayashi, K;Mizuk, R;Mohanty, G. B;Mohapatra, D;Moll, A;Nakano, E;Neubauer, S;Ng, C;Nishida, S;Nitoh, O;Olsen, S. L;Onuki, Y;Ozaki, H;Pakhlova, G;Park, C. W;Park, H. K;Ryu, S;Santelj, L;Schneider, O;Schwartz, A. J;Senyo, K;Shapkin, M;Shen, C. P;Shibata, T.-A;Shiu, J.-G;Sibidanov, A;Simon, F;Sokolov, A;Solovieva, E;Stanic, S;Staric, M;Sumihama, M;Sumisawa, K;Sumiyoshi, T;Teramoto, Y;Trabelsi, K;Tsuboyama, T;Uglov, T;Unno, Y;Uno, S;Vorobyev, V;Wang, P;Williams, K. M;Yamashita, Y;Zander, D;Zhulanov, V;Zupanc, A;Collaboration, Belle |
| 貢獻者: | 理學院物理學系 |
| 關鍵詞: | ddc:530;FOS: Physical sciences;High Energy Physics - Experiment;High Energy Physics - Experiment (hep-ex);info:eu-repo/classification/ddc/530;Physics |
| 日期: | 2012-10-18 |
| 上傳時間: | 2026-04-23 11:55:57 (UTC+8) |
| 出版者: | American Physical Society;American Physical Society (APS) |
| 摘要: | 摘要： We report the measurement of the branching fraction, the polarization, and the parameters of the time-dependent CP violation in B0 -> D*+ D*- decays using a data sample of 772 million BB pairs, collected at the Y(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We obtain a branching fraction of B = (7.82 +- 0.38 +- 0.63) x10^{-4}, a CP-odd fraction of R_\perp = 0.138 +- 0.024 +- 0.006 and, additionally, a fraction of the longitudinal component in the transversity base of R_0 = 0.624 +- 0.029 +- 0.011. The measured values of the parameters of the CP violation are S_{D*+ D*-} = -0.79 +- 0.13 +- 0.03 and A_{D*+ D*-} = 0.15 +- 0.08 +- 0.04.
出版者： American Physical Society (APS)
出版日期： 2012-10-18
出處： Physical Review D, 2012-10, Vol.86
識別號： ISSN: 1550-7998
識別號： EISSN: 1550-2368
識別號： DOI: 10.48550/arxiv.1207.5611
識別號： DOI: 10.1103/physrevd.86.071103 |
| 顯示於類別: | [物理學系] 期刊論文
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