Measurements of branching fractions and time-dependent CP violating asymmetries in B-0 -> D-(*D-)+/-(-/+) decays

  • Roehrken, M.
  • Adachi, I.
  • Aihara, H.
  • Asner, D. M.
  • Aulchenko, V.
  • ... Cheon, B. G.
  • 외 157명
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초록

We report measurements of branching fractions and time-dependent CP asymmetries in B-0 -> D+D- and B-0 -> D*D-+/-(-/+) decays using a data sample that contains (772 +/- 11) x 10(6)B (B) over bar pairs collected at the Y(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We determine the branching fractions to be B(B-0 -> D+D-) = (2.12 +/- 0.16 +/- 0.18) X 10(-4) and B(B-0 -> D*D-+/-(-/+)) = (6.14 +/- 0.29 +/- 0.50) x 10(-4). We measure CP asymmetry parameters SD+D- = -1.06(-0.14)(+0.21) +/- 0.08 and CD+D- = -0.43 +/- 0.16 +/- 0.05 in B-0 -> D+D- and A(D*D) = +0.06 +/- 0.05 +/- 0.02, S-D*D = -0.78 +/- 0.15 +/- 0.05, C-D*D = -0.01 +/- 0.11 +/- 0.04, +/- Delta S-D*D = -0.13 +/- 0.15 +/- 0.04 and Delta C-D*D = +0.12 +/- 0.11 +/- 0.03 in B-0 -> D*D-+/-(-/+), where the first uncertainty is statistical and the second is systematic. We exclude the conservation of CP symmetry in both decays at equal to or greater than 4 sigma significance.

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제목
Measurements of branching fractions and time-dependent CP violating asymmetries in B-0 -> D-(*D-)+/-(-/+) decays
저자
Roehrken, M.Adachi, I.Aihara, H.Asner, D. M.Aulchenko, V.Aushev, T.Bakich, A. M.Barrett, M.Belous, K.Bhardwaj, V.Bhuyan, B.Bischofberger, M.Bondar, A.Bonvicini, G.Bozek, A.Bracko, M.Brovchenko, O.Browder, T. E.Chang, M. -C.Chen, A.Chen, P.Cheon, B. G.Chilikin, K.Cho, I. -S.Cho, K.Choi, Y.Dalseno, J.Dolezal, Z.Drasal, Z.Drutskoy, A.Eidelman, S.Fast, J. E.Feindt, M.Gaur, V.Gabyshev, N.Garmash, A.Goh, Y. M.Haba, J.Hayashii, H.Horii, Y.Hoshi, Y.Hou, W. -S.Hsiung, Y. B.Hyun, H. J.Iijima, T.Ishikawa, A.Itoh, R.Iwabuchi, M.Iwasaki, Y.Julius, T.Kang, J. H.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.Kronenbitter, B.Kuhr, T.Kumita, T.Kwon, Y. -J.Lee, S. -H.Li, J.Li, Y.Libby, J.Liu, C.Liu, Y.Liu, Z. Q.Liventsev, D.Louvot, R.Miyabayashi, K.Miyata, H.Mizuk, R.Mohanty, G. B.Moll, A.Mori, T.Muramatsu, N.Nagasaka, Y.Nakano, E.Nakao, M.Natkaniec, Z.Nishida, S.Nitoh, O.Ogawa, S.Ohshima, T.Okuno, S.Olsen, S. L.Ozaki, H.Pakhlova, G.Park, C. W.Park, H.Park, H. K.Park, K. S.Pedlar, T. K.Pestotnik, R.Petric, M.Piilonen, L. E.Poluektov, A.Prim, M.Prothmann, K.Ritter, M.Ryu, S.Sahoo, H.Sakai, Y.Sanuki, T.Sato, Y.Schneider, O.Schwanda, C.Schwartz, A. J.Senyo, K.Seon, O.Sevior, M. E.Shapkin, M.Shen, C. P.Shibata, T. -A.Shiu, J. -G.Shwartz, B.Sibidanov, A.Simon, F.Singh, J. B.Smerkol, P.Sohn, Y. -S.Sokolov, A.Solovieva, E.Stanic, S.Staric, M.Sumisawa, K.Sumiyoshi, T.Trabelsi, K.Uchida, M.Uehara, S.Unno, Y.Uno, S.Urquijo, P.Vanhoefer, P.Varner, G.Varvell, K. E.Vorobyev, V.Wang, C. H.Wang, M. -Z.Wang, P.Watanabe, M.Watanabe, Y.Williams, K. M.Won, E.Yamamoto, H.Yamashita, Y.Zander, D.Zhang, Z. P.Zhilich, V.Zhulanov, V.Zupanc, A.
DOI
10.1103/PhysRevD.85.091106
발행일
2012-05
유형
Article
저널명
Physical Review D - Particles, Fields, Gravitation and Cosmology
85
9
페이지
1 ~ 7

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