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Study of the suppressed B meson decay B--> DK-, D -> K+pi(-)

Authors
Horii, Y.Trabelsi, K.Yamamoto, H.Adachi, I.Aihara, H.Arinstein, K.Aulchenko, V.Balagura, V.Barberio, E.Bedny, I.Belous, K.Bhardwaj, V.Bitenc, U.Blyth, S.Bozek, A.Bracko, M.Browder, T. E.Chao, Y.Chen, A.Chen, W. T.Cheon, Byung GuChistov, R.Cho, I.-S.Choi, S.-K.Choi, Y.Dalseno, J.Dash, M.Eidelman, S.Gabyshev, N.Ha, H.Haba, J.Hara, T.Hayasaka, K.Hazumi, M.Heffernan, D.Hoshi, Y.Hou, W.-S.Hyun, H. J.Inami, K.Ishikawa, A.Ishino, H.Itoh, R.Iwabuchi, M.Iwasaki, M.Iwasaki, Y.Kah, D. H.Kaji, H.Kang, J. H.Katayama, N.Kawai, H.Kawasaki, T.Kichimi, H.Kim, H. J.Kim, S. K.Kim, Y. J.Kinoshita, K.Korpar, S.Krizan, P.Krokovny, P.Kuo, C. C.Kuroki, Y.Kuzmin, A.Kwon, Y.-J.Lee, J. S.Lee, M. J.Lee, S. E.Lesiak, T.Li, J.Lin, S.-W.Liu, C.Liventsev, D.Mandl, F.McOnie, S.Medvedeva, T.Mitaroff, W.Miyabayashi, K.Miyake, H.Miyata, H.Miyazaki, Y.Mizuk, R.Moloney, G. R.Nagamine, T.Nagasaka, Y.Nakao, M.Nakazawa, H.Natkaniec, Z.Nishida, S.Nitoh, O.Ogawa, S.Ohshima, T.Okuno, S.Ozaki, H.Pakhlova, G.Park, C. W.Park, H.Park, H. K.Peak, L. S.Pestotnik, R.Piilonen, L. E.Sahoo, H.Sakai, Y.Schneider, O.Schwanda, C.Schwartz, A. J.Senyo, K.Sevior, M. E.Shapkin, M.Shibuya, H.Shiu, J.-G.Somov, A.Stanic, S.Staric, M.Sumiyoshi, T.Suzuki, S.Takasaki, F.Tamura, N.Tanaka, M.Teramoto, Y.Tsuboyama, T.Uehara, S.Unno, Y.Uno, S.Urquijo, P.Usov, Y.Varner, G.Varvell, K. E.Vervink, K.Wang, C. H.Wang, M.-Z.Wang, P.Wang, X. L.Watanabe, Y.Wedd, R.Won, E.Yamashita, Y.Yamauchi, M.Zhang, C. C.Zhang, Z. P.Zhilich, V.Zhulanov, V.Zupanc, A.Zyukova, O.
Issue Date
Oct-2008
Publisher
AMER PHYSICAL SOC
Citation
PHYSICAL REVIEW D, v.78, no.7, pp.1 - 7
Indexed
SCIE
SCOPUS
Journal Title
PHYSICAL REVIEW D
Volume
78
Number
7
Start Page
1
End Page
7
URI
https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/177828
DOI
10.1103/PhysRevD.78.071901
ISSN
1550-7998
Abstract
We report a study of the suppressed B meson decay B--> DK- followed by D -> K+pi(-), where D indicates a D-0 or (D)overbar(0) state. The two decay paths interfere and provide information on the CP-violating angle phi(3). We use a data sample containing 657x10(6) B(B)overbar pairs recorded at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) storage ring. We do not find significant evidence for the mode B--> DK-, D -> K+pi(-), and set an upper limit of r(B)< 0.19, where r(B) is the magnitude of the ratio of amplitudes vertical bar A(B-->(D)K-0(-))/A(B-->(DK-)-K-0)vertical bar. The decay B--> D pi(-), D -> K+pi(-) is also analyzed as a reference, for which we observe a signal with 6.6 sigma significance, and measure the charge asymmetry A(D pi) to be -0.02(-0.16)(+0.15)(stat)+/- 0.04(syst). In addition, the ratio B(B-->(DK-)-K-0)/B(B--> D-0 pi(-)) is measured to be [6.77 +/- 0.23(stat)+/- 0.30(syst)]x10(-2).
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