Measurement of B0 → D- s K0 S π+ and B+ → D- sK+ K+ branching fractions

Journal Article (Journal Article)

We report a measurement of the B0 and B+ meson decays to the D-sK0Sπ+ and D-sK+K+ final states, respectively, using 657 × 106BB¯ pairs collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e+ collider. Using the D-s → φ π-, K∗(892)0K- and K0SK- decay modes for the Ds reconstruction, we measure the following branching fractions: B(B0 → D-sK0sπ+) = [0.47 ± 0.06(stat) ± 0.05(syst)] × 10-4 and B(B+ → D-sK+K+) = [0.93 ± 0.22(stat) ± 0.10(syst)] × 10-5. We find the ratio of the branching fraction of B+ → D-sK+K+ to that of the analogous Cabibbo-favored B+ → D-sK+π+ decay to be RB = 0.054 ± 0.013(stat) ± 0.006(syst), which is consistent with the naive factorization model. We also observe a deviation of the DsK invariant-mass distribution from the three-body phase-space model for both studied decays.

Full Text

Duke Authors

Cited Authors

  • Wiechczynski, J; Stypula, J; Abdesselam, A; Adachi, I; Adamczyk, K; Aihara, H; Al Said, S; Arinstein, K; Asner, DM; Aulchenko, V; Aushev, T; Ayad, R; Bakich, AM; Bansal, V; Bhardwaj, V; Bhuyan, B; Bobrov, A; Bondar, A; Bonvicini, G; Bozek, A; Bračko, M; Browder, TE; Èervenkov, D; Chekelian, V; Cheon, BG; Cho, K; Chobanova, V; Choi, SK; Choi, Y; Cinabro, D; Dalseno, J; Danilov, M; Dingfelder, J; Doleəal, Z; Drásal, Z; Drutskoy, A; Eidelman, S; Farhat, H; Fast, JE; Ferber, T; Frost, O; Gaur, V; Gabyshev, N; Ganguly, S; Garmash, A; Getzkow, D; Gillard, R; Goh, YM; Grzymkowska, O; Haba, J; Hara, T; Hayasaka, K; Hayashii, H; He, XH; Hou, WS; Huschle, M; Hyun, HJ; Iijima, T; Ishikawa, A; Itoh, R; Iwasaki, Y; Jaegle, I; Joffe, D; Joo, KK; Julius, T; Kang, KH; Kato, E; Kawasaki, T; Kichimi, H; Kim, DY; Kim, JB; Kim, JH; Kim, MJ; Kim, SH; Kim, YJ; Kinoshita, K; Ko, BR; Kodyš, P; Kriəan, P; Krokovny, P; Kuhr, T; Kumita, T; Kuzmin, A; Kwon, YJ; Lange, JS; Lee, IS; Li, Y; Li Gioi, L; Libby, J; Liventsev, D; Lukin, P; Matvienko, D; Miyabayashi, K; Miyata, H; Mizuk, R; Mohanty, GB; Moll, A; Mori, T; Mussa, R; Nakao, M

Published Date

  • February 26, 2015

Published In

Volume / Issue

  • 91 / 3

Electronic International Standard Serial Number (EISSN)

  • 1550-2368

International Standard Serial Number (ISSN)

  • 1550-7998

Digital Object Identifier (DOI)

  • 10.1103/PhysRevD.91.032008

Citation Source

  • Scopus