Measurements of charmless hadronic b→s penguin decays in the π+π-K+π- final state and first observation of B0→ρ0K+π-
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.; Bračko, 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.; Križan, 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.; Schümann, 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.; Stanič, S.; Starič, 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.
2009
Abstract
We report measurements of charmless hadronic B0 decays into the π+π-K+π- final state. The analysis uses a sample of 657×106 BB̄ pairs collected with the Belle detector at the KEKB asymmetric-energy e+e- collider at the resonance. The decay B0→ρ0K+π- is observed for the first time; the significance is 5.0σ and the corresponding partial branching fraction for MKπ(0.75,1.20)GeV/c2 is [2.8±0.5(stat) ±0.5(syst)]×10-6. We also obtain the first evidence for B0→f0(980)K+π- with 3.5σ significance and for B0→π+π- K*0 with 4.5σ significance. For the two-body decays B0→ρ0K*0 and B0→f0(980)K*0, the significances are 2.7σ and 2.5σ, respectively, and the upper limits on the branching fractions are 3.4×10-6 and 2.2×10-6 at 90% confidence level. © 2009 The American Physical Society.
Details
Title
Measurements of charmless hadronic b→s penguin decays in the π+π-K+π- final state and first observation of B0→ρ0K+π-
Author(s)
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. ; Bračko, 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. ; Križan, 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. ; Schümann, 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. ; Stanič, S. ; Starič, 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.
Published in
Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume
80
Issue
5
Pages
051103
Date
2009
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LPHE
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Scientific production and competences > SB - School of Basic Sciences > IPHYS - Institute of Physics > LPHE - High Energy Physics Laboratory
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Work produced at EPFL
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Peer-reviewed publications
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Record creation date
2010-11-05