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

  • Kronenbitter, B.
  • Adachi, I.
  • Aihara, H.
  • Arinstein, K.
  • Asner, D. M.
  • ... Cheon, B. G.
  • 외 156명
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초록

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.

키워드

ASYMMETRIES
제목
First observation of CP violation and improved measurement of the branching fraction and polarization of B-0 -> D*(+) D*(-) decays
저자
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.
DOI
10.1103/PhysRevD.86.071103
발행일
2012-10
유형
Article
저널명
Physical Review D - Particles, Fields, Gravitation and Cosmology
86
7
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