Measurements of charmless hadronic b -> s penguin decays in the pi(+)pi K--(+)pi(-) final state and first observation of B-0 -> rho K-0(+)pi(-)

  • Kyeong, S. -H.
  • Kwon, Y. -J.
  • Adachi, I.
  • Aihara, H.
  • Bakich, A. M.
  • ... Cheon, B. G.
  • 외 125명
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초록

We report measurements of charmless hadronic B-0 decays into the pi(+)pi K--(+)pi(-) final state. The analysis uses a sample of 657 x 10(6) B (B) over bar pairs collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider at the resonance. The decay B-0 -> rho K-0(+)pi(-) is observed for the first time; the significance is 5.0 sigma and the corresponding partial branching fraction for M-K pi is an element of (0.75, 1.20) GeV/c(2) is [2.8 +/- 0.5(stat) +/- 0.5(syst)] x 10(-6). We also obtain the first evidence for B-0 -> f(0)(980)K+pi(-) with 3.5 sigma significance and for B-0 -> pi(+)pi K-*(0) with 4.5 sigma significance. For the two-body decays B-0 -> rho K-0*(0) and B-0 -> f(0)(980)K*(0), the significance are 2.7 sigma and 2.5 sigma, respectively, and the upper limits on the branching fractions are 3.4 x 10(-6) and 2.2 x 10(-6) at 90% confidence level.

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제목
Measurements of charmless hadronic b -> s penguin decays in the pi(+)pi K--(+)pi(-) final state and first observation of B-0 -> rho K-0(+)pi(-)
저자
Kyeong, S. -H.Kwon, Y. -J.Adachi, I.Aihara, H.Bakich, A. M.Balagura, V.Barberio, E.Bay, A.Belous, K.Bischofberger, M.Bozek, A.Bracko, M.Browder, T. E.Chang, M. -C.Chao, Y.Chen, A.Cheon, B. G.Chiang, C. -C.Cho, I. -S.Choi, Y.Dalseno, J.Das, A.Drutskoy, A.Dungel, W.Eidelman, S.Gabyshev, N.Goldenzweig, P.Ha, H.Haba, J.Han, B. -Y.Hara, T.Hasegawa, Y.Hayasaka, K.Hayashii, H.Hoshi, Y.Hyun, H. J.Inami, K.Ishikawa, A.Itoh, R.Iwasaki, M.Joshi, N. J.Kah, D. H.Kang, J. H.Kapusta, P.Katayama, N.Kawasaki, T.Kim, H. O.Kim, J. H.Kim, Y. I.Kim, Y. J.Kinoshita, K.Ko, B. R.Korpar, S.Krizan, P.Kumar, R.Lee, M. J.Lesiak, T.Li, J.Liu, C.Liu, Y.Louvot, R.Matyja, A.McOnie, S.Miyabayashi, K.Miyata, H.Miyazaki, Y.Mizuk, R.Nagasaka, Y.Nakano, E.Nakao, M.Natkaniec, Z.Nishida, S.Nishimura, K.Nitoh, O.Ogawa, S.Ohshima, T.Okuno, S.Ozaki, H.Pakhlov, P.Pakhlova, G.Park, C. W.Park, H.Park, H. K.Pestotnik, R.Piilonen, L. E.Sahoo, H.Sakai, K.Sakai, Y.Schneider, O.Schuemann, J.Schwanda, C.Schwartz, A. J.Sekiya, A.Senyo, K.Sevior, M. E.Shapkin, M.Shen, C. P.Shiu, J. -G.Shwartz, B.Singh, J. B.Sinha, R.Sokolov, A.Stanic, S.Staric, M.Stypula, J.Sumisawa, K.Sumiyoshi, T.Taylor, G. N.Teramoto, Y.Trabelsi, K.Uehara, S.Unno, Y.Urquijo, P.Varner, G.Varvell, K. E.Vervink, K.Vinokurova, A.Wang, C. H.Wang, M. -Z.Wang, P.Watanabe, Y.Wedd, R.Won, E.Yabsley, B. D.Yamashita, Y.Zhang, Z. P.Zhilich, V.Zhulanov, V.Zivko, T.Zupanc, A.Zyukova, O.
DOI
10.1103/PhysRevD.80.051103
발행일
2009-09
유형
Article
저널명
Physical Review D - Particles, Fields, Gravitation and Cosmology
80
5
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