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Search for B0 → ρ0ρ0 and non-resonant B0 → 4π

  • K. Abe
  • , I. Adachi
  • , H. Aihara
  • , K. Arinstein
  • , T. Aso
  • , V. Aulchenko
  • , T. Aushev
  • , T. Aziz
  • , S. Bahinipati
  • , A. M. Bakich
  • , V. Balagura
  • , Y. Ban
  • , S. Banerjee
  • , E. Barberio
  • , A. Bay
  • , I. Bedny
  • , K. Belous
  • , V. Bhardwaj
  • , U. Bitenc
  • , S. Blyth
  • A. Bondar, A. Bozek, M. Bracko, J. Brodzicka, T. E. Browder, M. C. Chang, P. Chang, Y. Chao, A. Chen, K. F. Chen, W. T. Chen, B. G. Cheon, C. C. Chiang, R. Chistov, I. S. Cho, S. K. Choi, Y. Choi, Y. K. Choi, S. Cole, J. Dalseno, M. Danilov, A. Das, M. Dash, J. Dragic, A. Drutskoy, S. Eidelman, D. Epifanov, S. Fratina, H. Fujii, M. Fujikawa, N. Gabyshev, A. Garmash, A. Go, G. Gokhroo, P. Goldenzweig, B. Golob, M. Grosse Perdekamp, H. Guler, H. Ha, J. Haba, K. Hara, T. Hara, Y. Hasegawa, N. C. Hastings, K. Hayasaka, H. Hayashii, M. Hazumi, D. Heffernan, T. Higuchi, L. Hinz, H. Hoedlmoser, T. Hokuue, Y. Horii, Y. Hoshi, K. Hoshina, S. Hou, W. S. Hou, Y. B. Hsiung, H. J. Hyun, Y. Igarashi, T. Iijima, K. Ikado, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwabuchi, M. Iwasaki, Y. Iwasaki, C. Jacoby, N. J. Joshi, M. Kaga, D. H. Kah, H. Kaji, S. Kajiwara, H. Kakuno, J. H. Kang, P. Kapusta, S. U. Kataoka, N. Katayama, H. Kawai, T. Kawasaki, A. Kibayashi, H. Kichimi, H. J. Kim, H. O. Kim, J. H. Kim, S. K. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, Y. Kozakai, P. Krizan, P. Krokovny, R. Kumar, E. Kurihara, A. Kusaka, A. Kuzmin, Y. J. Kwon, J. S. Lange, G. Leder, J. Lee, J. S. Lee, M. J. Lee, S. E. Lee, T. Lesiak, J. Li, A. Limosani, S. W. Lin, Y. Liu, D. Liventsev, J. MacNaughton, G. Majumder, F. Mandl, D. Marlow, T. Matsumura, A. Matyja, S. McOnie, T. Medvedeva, Y. Mikami, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, Y. Miyazaki, R. Mizuk, G. R. Moloney, T. Mori, J. Mueller, A. Murakami, T. Nagamine, Y. Nagasaka, Y. Nakahama, I. Nakamura, E. Nakano, M. Nakao, H. Nakayama, H. Nakazawa, Z. Natkaniec, K. Neichi, S. Nishida, K. Nishimura, Y. Nishio, I. Nishizawa, O. Nitoh, S. Noguchi, T. Nozaki, A. Ogawa, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, S. Ono, W. Ostrowicz, H. Ozaki, P. Pakhlov, G. Pakhlova, H. Palka, C. W. Park, H. Park, K. S. Park, N. Parslow, L. S. Peak, M. Pernicka, R. Pestotnik, M. Peters, L. E. Piilonen, A. Poluektov, J. Rorie, M. Rozanska, H. Sahoo, Y. Sakai, H. Sakamoto, H. Sakaue, T. R. Sarangi, N. Satoyama, K. Sayeed, T. Schietinger, O. Schneider, P. Schönmeier, J. Schümann, C. Schwanda, A. J. Schwartz, R. Seidl, A. Sekiya, K. Senyo, M. E. Sevior, L. Shang, M. Shapkin, C. P. Shen, H. Shibuya, S. Shinomiya, J. G. Shiu, B. Shwartz, J. B. Singh, A. Sokolov, E. Solovieva, A. Somov, S. Stanic, M. Staric, J. Stypula, A. Sugiyama, K. Sumisawa, T. Sumiyoshi, S. Suzuki, S. Y. Suzuki, O. Tajima, F. Takasaki, K. Tamai, N. Tamura, M. Tanaka, N. Taniguchi, G. N. Taylor, Y. Teramoto, I. Tikhomirov, K. Trabelsi, Y. F. Tse, T. Tsuboyama, K. Uchida, Y. Uchida, S. Uehara, K. Ueno, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Ushiroda, Y. Usov, G. Varner, K. E. Varvell, K. Vervink, S. Villa, A. Vinokurova, C. C. Wang, C. H. Wang, J. Wang, M. Z. Wang, P. Wang, X. L. Wang, M. Watanabe, Y. Watanabe, R. Wedd, J. Wicht, L. Widhalm, J. Wiechczynski, E. Won, B. D. Yabsley, A. Yamaguchi, H. Yamamoto, M. Yamaoka, Y. Yamashita, M. Yamauchi, C. Z. Yuan, Y. Yusa, C. C. Zhang, L. M. Zhang, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc, N. Zwahlen
  • High Energy Accelerator Research Organization (KEK)
  • Department of Physics
  • University of Tokyo
  • Budker Institute of Nuclear Physics of the Siberian Branch of the RAS
  • Toyama National College of Maritime Technology
  • Institute for Theoretical and Experimental Physics
  • ENAC-IIC-GEL
  • Tata Institute of Fundamental Research, Mumbai
  • University of Cincinnati
  • University of Sydney
  • Tsinghua University
  • School of Physics
  • University of Melbourne
  • Kurchatov Institute
  • Panjab University
  • Department of Biochemistry and Molecular and Structural Biology
  • National United University Taiwan
  • Institute for Nuclear Physics
  • University of Maribor
  • University of Hawaii
  • Department of Physics
  • Fu Jen Catholic University
  • Department of Physics
  • National Taiwan University
  • National Central University
  • Hanyang University
  • Yonsei University
  • Gyeongsang National University
  • Sungkyunkwan University
  • Virginia Polytechnic Institute and State University
  • Nara Women's University
  • Princeton University
  • University of Ljubljana
  • University of Illinois at Urbana-Champaign
  • Riken BNL Research Center
  • Korea University
  • Nagoya University
  • Osaka University
  • Shinshu University
  • Tohoku University
  • Tohoku Gakuin University
  • Tokyo University of Agriculture and Technology
  • Kyungpook National University
  • Saga University
  • Tokyo Institute of Technology
  • The Graduate University for Advanced Studies
  • Chiba University
  • Niigata University
  • Seoul National University
  • Justus-Liebig-Universität Giessen
  • Institut für Hochenergiephysik
  • University of Pittsburgh
  • Hiroshima Institute of Technology
  • Osaka City University
  • Tokyo Metropolitan University
  • Toho University
  • Kanagawa University
  • Kyoto University
  • Institute of High Energy Physics, Chinese Academy of Sciences
  • University of Nova Gorica
  • Nippon Dental University
  • University of Science and Technology of China

Research output: Contribution to conferencePaperpeer-review

Abstract

We search for the decay B0 → ρ0ρ0 and other possible charmless modes with a π+ π- π+ π- final state, including B0 → ρ0f0(980), B0 → f0(980)f0(980), B0 → f0(980)π π, B0 → ρ0π π and non-resonant B0 → 4π. These results are obtained from a data sample containing 520 × 106 BB pairs collected by the Belle detector at the KEKB asymmetric-energy e+e- collider. We measure a branching fraction of (0.9 ± 0.4+0.3 -0.4) × 10-6, or B(B 0 → ρ0ρ0) < 1.6 × 10-6 at the 90% confidence level. The significance including systematic uncertainties is 1.8σ. These values correspond to the final state being longitudinally polarized. We also measure the branching fraction of non-resonant B0 → 4π decay to be (10.2 ± 4.7+2.3 -1.5) × 10-6 with 2.1σ significance, and set the 90% confidence level upper limit B(B0 → 4π) < 17.3 × 10-6. For the other related decays, B0 → ρ0f0(980), B0 → f0(980)f0(980), B0 → f0(980)ρ and B0 → ρ0π π, no significant signals are observed and upper limits on the branching fractions are set.

Original languageEnglish
Publication statusPublished - 1 Dec 2007
Externally publishedYes
Event23rd International Symposium on Lepton-Photon Interactions at High Energy, LP 2007 - Daegu, Korea, Republic of
Duration: 13 Aug 200718 Aug 2007

Conference

Conference23rd International Symposium on Lepton-Photon Interactions at High Energy, LP 2007
Country/TerritoryKorea, Republic of
CityDaegu
Period13/08/0718/08/07

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