Search for the decay $B^0\to DK^{*0}$ followed by $D\to K^-π^+$
Creators: name: The Belle Collaboration
name: Negishi, K.
name: Horii, Y.
name: Onuki, Y.
name: Sanuki, T.
name: Yamamoto, H.
name: Adachi, I.
name: Aihara, H.
name: Asner, D. M.
name: Aushev, T.
name: Bakich, A. M.
name: Ban, Y.
name: Belous, K.
name: Bhuyan, B.
name: Bondar, A.
name: Browder, T. E.
name: Chang, M. -C.
name: Chen, A.
name: Chen, P.
name: Cheon, B. G.
name: Chilikin, K.
name: Chistov, R.
name: Cho, I. -S.
name: Cho, K.
name: Choi, Y.
name: Dalseno, J.
name: Doležal, Z.
name: Drásal, Z.
name: Drutskoy, A.
name: Eidelman, S.
name: Fast, J. E.
name: Gaur, V.
name: Gabyshev, N.
name: Goh, Y. M.
name: Haba, J.
name: Hayashii, H.
name: Hoshi, Y.
name: Hou, W. -S.
name: Hyun, H. J.
name: Iijima, T.
name: Inami, K.
name: Ishikawa, A.
name: Itoh, R.
name: Iwabuchi, M.
name: Iwasaki, Y.
name: Iwashita, T.
name: Julius, T.
name: Kang, J. H.
name: Kawasaki, T.
name: Kiesling, C.
name: Kim, H. J.
name: Kim, J. B.
name: Kim, J. H.
name: Kim, K. T.
name: Kim, M. J.
name: Kim, Y. J.
name: Ko, B. R.
name: Kodyš, P.
name: Korpar, S.
name: Kouzes, R. T.
name: Krokovny, P.
name: Kuhr, T.
name: Kwon, Y. -J.
name: Lee, S. -H.
name: Libby, J.
name: Liu, C.
name: Liu, Y.
name: Liu, Z. Q.
name: Louvot, R.
name: Matvienko, D.
name: McOnie, S.
name: Miyabayashi, K.
name: Miyata, H.
name: Miyazaki, Y.
name: Mohapatra, D.
name: Moll, A.
name: Muramatsu, N.
name: Nakano, E.
name: Nakao, M.
name: Nishida, S.
name: Nishimura, K.
name: Nitoh, O.
name: Ogawa, S.
name: Ohshima, T.
name: Okuno, S.
name: Pakhlova, G.
name: Park, H. K.
name: Pedlar, T. K.
name: Pestotnik, R.
name: Petrič, M.
name: Piilonen, L. E.
name: Röhrken, M.
name: Ryu, S.
name: Sakai, K.
name: Sakai, Y.
name: Schneider, O.
name: Schwanda, C.
name: Schwartz, A. J.
name: Senyo, K.
name: Sevior, M. E.
name: Shapkin, M.
name: Shebalin, V.
name: Shibata, T. -A.
name: Shiu, J. -G.
name: Shwartz, B.
name: Sibidanov, A.
name: Simon, F.
name: Smerkol, P.
name: Sohn, Y. -S.
name: Solovieva, E.
name: Stanič, S.
name: Starič, M.
name: Sumihama, M.
name: Sumiyoshi, T.
name: Suzuki, S.
name: Tatishvili, G.
name: Teramoto, Y.
name: Trabelsi, K.
name: Uchida, M.
name: Uglov, T.
name: Unno, Y.
name: Uno, S.
name: Urquijo, P.
name: Varner, G.
name: Varvell, K. E.
name: Vorobyev, V.
name: Wang, C. H.
name: Wang, M. -Z.
name: Wang, P.
name: Watanabe, M.
name: Watanabe, Y.
name: Won, E.
name: Yabsley, B. D.
name: Yamashita, Y.
name: Zhang, C. C.
name: Zhang, Z. P.
name: Zhilich, V.
name: Zhulanov, V.
name: Zupanc, A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: We report a study of the decay $B^0\rightarrow D K^+π^-$ followed by $D\rightarrow K^-π^+$, where $D$ indicates $D^0$ or $\bar{D}^0$. We reconstruct the $D K^+π^-$ state in a phase space corresponding to $D K^{*}(892)^0$. The CP-violating angle $ϕ_3$ affects its decay rate via the interference between $b\rightarrow u$ and $b\rightarrow c$ transitions. The result is obtained from a 711 ${\rm fb}^{-1}$ data sample that contains 772 $\times 10^6 B\bar{B}$ pairs collected at the $Υ(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^+ e^-$ collider. We measure the ratio ${\cal R}_{DK^{*0}} \equiv Γ(B^0\rightarrow [K^-π^+]_DK^+π^-)/Γ(B^0\rightarrow [K^+π^-]_DK^+π^-)$ to be $(4.1 ^{+ 5.6 + 2.8}_{- 5.0 - 1.8}) \times 10^{-2}$, and set an upper limit of ${\cal R}_{DK^{*0}} &lt; 0.16$ at the 95% confidence level.