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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, Tsukuba
  • The University of Tokyo
  • Budker Institute of Nuclear Physics of the Siberian Branch of the RAS
  • National Institute of Technology, Toyama College
  • Alikhanov Institute for Theoretical and Experimental Physics
  • Swiss Federal Institute of Technology Lausanne
  • Tata Institute of Fundamental Research
  • University of Cincinnati
  • The University of Sydney
  • Peking University
  • University of Melbourne
  • Institute for High Energy Physics of National Research Centre ‘Kurchatov Institute’
  • Panjab University
  • Jožef Stefan Institute
  • National United University Taiwan
  • Polish Academy of Sciences
  • University of Maribor
  • University of Hawai'i at Mānoa
  • Fu Jen Catholic University
  • 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
  • The University of Osaka
  • Shinshu University
  • Tohoku University
  • Tohoku Gakuin University
  • Tokyo University of Agriculture and Technology
  • Kyungpook National University
  • Saga University
  • Institute of Science Tokyo
  • The Graduate University for Advanced Studies
  • Chiba University
  • Niigata University
  • Seoul National University
  • Justus Liebig University Giessen
  • Austrian Academy of Sciences
  • University of Pittsburgh
  • Hiroshima Institute of Technology
  • Osaka Metropolitan University
  • Tokyo Metropolitan University
  • Toho University
  • Kanagawa University
  • Kyoto University
  • CAS - Institute of High Energy Physics
  • 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
StatePublished - 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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