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First observation of CP violation and improved measurement of the branching fraction and polarization of B-0 -> D*(+) D*(-) decaysopen access

Authors
Kronenbitter, B.Adachi, I.Aihara, H.Arinstein, K.Asner, D. M.Aushev, T.Aziz, T.Bakich, A. M.Barrett, M.Belous, K.Bhardwaj, V.Bhuyan, B.Bondar, A.Bozek, A.Bracko, M.Brovchenko, O.Browder, T. E.Chekelian, V.Chen, A.Chen, P.Cheon, B. G.Chistov, R.Cho, I. -S.Cho, K.Choi, Y.Dalseno, J.Dolezal, Z.Drasal, Z.Drutskoy, A.Eidelman, S.Esen, S.Fast, J. E.Feindt, M.Gaur, V.Gabyshev, N.Goh, Y. M.Haba, J.Hayashii, H.Horii, Y.Hoshi, Y.Hou, W. -S.Hsiung, Y. B.Iijima, T.Inami, K.Ishikawa, A.Itoh, R.Iwabuchi, M.Iwasaki, Y.Julius, T.Kang, J. H.Kapusta, P.Kawasaki, T.Kiesling, C.Kim, H. J.Kim, H. O.Kim, J. B.Kim, J. H.Kim, K. T.Kim, M. J.Kim, Y. J.Kinoshita, K.Ko, B. R.Koblitz, S.Kodys, P.Korpar, S.Kouzes, R. T.Krizan, P.Krokovny, P.Kuhr, T.Kumar, R.Kumita, T.Kwon, Y. -J.Lee, S. -H.Li, J.Li, Y.Libby, J.Liu, Y.Liu, Z. Q.Liventsev, D.Louvot, R.McOnie, S.Miyabayashi, K.Miyata, H.Mizuk, R.Mohanty, G. B.Mohapatra, D.Moll, A.Nakano, E.Nakao, M.Neubauer, S.Ng, C.Nishida, S.Nishimura, K.Nitoh, O.Ohshima, T.Okuno, S.Olsen, S. L.Onuki, Y.Ozaki, H.Pakhlov, P.Pakhlova, G.Park, C. W.Park, H.Park, H. K.Pestotnik, R.Petric, M.Piilonen, L. E.Prim, M.Ritter, M.Roehrken, M.Ryu, S.Sahoo, H.Sakai, Y.Sandilya, S.Santelj, L.Sanuki, T.Schneider, O.Schwanda, C.Schwartz, A. J.Senyo, K.Sevior, M. E.Shapkin, M.Shen, C. P.Shibata, T. -A.Shiu, J. -G.Sibidanov, A.Simon, F.Smerkol, P.Sohn, Y. -S.Sokolov, A.Solovieva, E.Stanic, S.Staric, M.Sumihama, M.Sumisawa, K.Sumiyoshi, T.Tatishvili, G.Teramoto, Y.Trabelsi, K.Tsuboyama, T.Uchida, M.Uehara, S.Uglov, T.Unno, Y.Uno, S.Usov, Y.Vanhoefer, P.Varner, G.Varvell, K. E.Vorobyev, V.Wang, C. H.Wang, P.Watanabe, Y.Williams, K. M.Won, E.Yabsley, B. D.Yamaoka, J.Yamashita, Y.Zander, D.Zhilich, V.Zhulanov, V.Zupanc, A.
Issue Date
Oct-2012
Publisher
AMER PHYSICAL SOC
Citation
PHYSICAL REVIEW D, v.86, no.7, pp.1 - 7
Indexed
SCIE
SCOPUS
Journal Title
PHYSICAL REVIEW D
Volume
86
Number
7
Start Page
1
End Page
7
URI
https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/144709
DOI
10.1103/PhysRevD.86.071103
ISSN
1550-7998
Abstract
We report the measurement of the branching fraction, the polarization, and the parameters of the time-dependent CP violation in B-0 -> D*(+) D*(-) decays using a data sample of 772 x 10(6)B (B) over bar pairs, collected at the Upsilon(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) x 10(-4), a CP-odd fraction of R-perpendicular to = 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 SD*+ D*- = 0.79 +/- 0.13 +/- 0.03 and A(D*+ D*-) 0.15 +/- 0.08 +/- 0.04.
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