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

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. BlythA. 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

Research output: Contribution to conference › Paper › peer-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 language	English (US)
State	Published - 2007
Event	23rd International Symposium on Lepton-Photon Interactions at High Energy, LP 2007 - Daegu, Korea, Republic of Duration: Aug 13 2007 → Aug 18 2007

Other

Other	23rd International Symposium on Lepton-Photon Interactions at High Energy, LP 2007
Country/Territory	Korea, Republic of
City	Daegu
Period	8/13/07 → 8/18/07

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

Cite this

Abe, K., Adachi, I., Aihara, H., Arinstein, K., Aso, T., Aulchenko, V., Aushev, T., Aziz, T., Bahinipati, S., Bakich, A. M., Balagura, V., Ban, Y., Banerjee, S., Barberio, E., Bay, A., Bedny, I., Belous, K., Bhardwaj, V., Bitenc, U., ... Zwahlen, N. (2007). Search for B⁰ → ρ⁰ρ⁰ and non-resonant B⁰ → 4π. Paper presented at 23rd International Symposium on Lepton-Photon Interactions at High Energy, LP 2007, Daegu, Korea, Republic of.

@conference{97ca40c70bd043988c3a6a046d90efea,

title = "Search for B0 → ρ0ρ0 and non-resonant B0 → 4π",

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.",

author = "K. Abe and I. Adachi and H. Aihara and K. Arinstein and T. Aso and V. Aulchenko and T. Aushev and T. Aziz and S. Bahinipati and Bakich, {A. M.} and V. Balagura and Y. Ban and S. Banerjee and E. Barberio and A. Bay and I. Bedny and K. Belous and V. Bhardwaj and U. Bitenc and S. Blyth and A. Bondar and A. Bozek and M. Bracko and J. Brodzicka and Browder, {T. E.} and Chang, {M. C.} and P. Chang and Y. Chao and A. Chen and Chen, {K. F.} and Chen, {W. T.} and Cheon, {B. G.} and Chiang, {C. C.} and R. Chistov and Cho, {I. S.} and Choi, {S. K.} and Y. Choi and {K. Choi}, Y. and S. Cole and J. Dalseno and M. Danilov and A. Das and M. Dash and J. Dragic and A. Drutskoy and S. Eidelman and D. Epifanov and S. Fratina and H. Fujii and M. Fujikawa and N. Gabyshev and A. Garmash and A. Go and G. Gokhroo and P. Goldenzweig and B. Golob and {Grosse Perdekamp}, M. and H. Guler and H. Ha and J. Haba and K. Hara and T. Hara and Y. Hasegawa and Hastings, {N. C.} and K. Hayasaka and H. Hayashii and M. Hazumi and D. Heffernan and T. Higuchi and L. Hinz and H. Hoedlmoser and T. Hokuue and Y. Horii and Y. Hoshi and K. Hoshina and S. Hou and Hou, {W. S.} and Hsiung, {Y. B.} and Hyun, {H. J.} and Y. Igarashi and T. Iijima and K. Ikado and K. Inami and A. Ishikawa and H. Ishino and R. Itoh and M. Iwabuchi and M. Iwasaki and Y. Iwasaki and C. Jacoby and Joshi, {N. J.} and M. Kaga and Kah, {D. H.} and H. Kaji and S. Kajiwara and H. Kakuno and Kang, {J. H.} and P. Kapusta and Kataoka, {S. U.} and N. Katayama and H. Kawai and T. Kawasaki and A. Kibayashi and H. Kichimi and Kim, {H. J.} and Kim, {H. O.} and Kim, {J. H.} and Kim, {S. K.} and Kim, {Y. J.} and K. Kinoshita and S. Korpar and Y. Kozakai and P. Krizan and P. Krokovny and R. Kumar and E. Kurihara and A. Kusaka and A. Kuzmin and Kwon, {Y. J.} and Lange, {J. S.} and G. Leder and J. Lee and Lee, {J. S.} and Lee, {M. J.} and Lee, {S. E.} and T. Lesiak and J. Li and A. Limosani and Lin, {S. W.} and Y. Liu and D. Liventsev and J. MacNaughton and G. Majumder and F. Mandl and D. Marlow and T. Matsumura and A. Matyja and S. McOnie and T. Medvedeva and Y. Mikami and W. Mitaroff and K. Miyabayashi and H. Miyake and H. Miyata and Y. Miyazaki and R. Mizuk and {R. Moloney}, G. and T. Mori and J. Mueller and A. Murakami and T. Nagamine and Y. Nagasaka and Y. Nakahama and I. Nakamura and E. Nakano and M. Nakao and H. Nakayama and H. Nakazawa and Z. Natkaniec and K. Neichi and S. Nishida and K. Nishimura and Y. Nishio and I. Nishizawa and O. Nitoh and S. Noguchi and T. Nozaki and A. Ogawa and S. Ogawa and T. Ohshima and S. Okuno and Olsen, {S. L.} and S. Ono and W. Ostrowicz and H. Ozaki and P. Pakhlov and G. Pakhlova and H. Palka and Park, {C. W.} and H. Park and Park, {K. S.} and N. Parslow and Peak, {L. S.} and M. Pernicka and R. Pestotnik and M. Peters and Piilonen, {L. E.} and A. Poluektov and J. Rorie and M. Rozanska and H. Sahoo and Y. Sakai and H. Sakamoto and H. Sakaue and Sarangi, {T. R.} and N. Satoyama and K. Sayeed and T. Schietinger and O. Schneider and P. Sch{\"o}nmeier and J. Sch{\"u}mann and C. Schwanda and Schwartz, {A. J.} and R. Seidl and A. Sekiya and K. Senyo and Sevior, {M. E.} and L. Shang and M. Shapkin and Shen, {C. P.} and H. Shibuya and S. Shinomiya and Shiu, {J. G.} and B. Shwartz and Singh, {J. B.} and A. Sokolov and E. Solovieva and A. Somov and S. Stanic and M. Staric and J. Stypula and A. Sugiyama and K. Sumisawa and T. Sumiyoshi and S. Suzuki and Suzuki, {S. Y.} and O. Tajima and F. Takasaki and K. Tamai and N. Tamura and M. Tanaka and N. Taniguchi and Taylor, {G. N.} and Y. Teramoto and I. Tikhomirov and K. Trabelsi and Tse, {Y. F.} and T. Tsuboyama and K. Uchida and Y. Uchida and S. Uehara and K. Ueno and T. Uglov and Y. Unno and S. Uno and P. Urquijo and Y. Ushiroda and Y. Usov and G. Varner and Varvell, {K. E.} and K. Vervink and S. Villa and A. Vinokurova and Wang, {C. C.} and Wang, {C. H.} and J. Wang and Wang, {M. Z.} and P. Wang and Wang, {X. L.} and M. Watanabe and Y. Watanabe and R. Wedd and J. Wicht and L. Widhalm and J. Wiechczynski and E. Won and Yabsley, {B. D.} and A. Yamaguchi and H. Yamamoto and M. Yamaoka and Y. Yamashita and M. Yamauchi and Yuan, {C. Z.} and Y. Yusa and Zhang, {C. C.} and Zhang, {L. M.} and Zhang, {Z. P.} and V. Zhilich and V. Zhulanov and A. Zupanc and N. Zwahlen",

year = "2007",

language = "English (US)",

note = "23rd International Symposium on Lepton-Photon Interactions at High Energy, LP 2007 ; Conference date: 13-08-2007 Through 18-08-2007",

}

Abe, K, Adachi, I, Aihara, H, Arinstein, K, Aso, T, Aulchenko, V, Aushev, T, Aziz, T, Bahinipati, S, Bakich, AM, Balagura, V, Ban, Y, Banerjee, S, Barberio, E, Bay, A, Bedny, I, Belous, K, Bhardwaj, V, Bitenc, U, Blyth, S, Bondar, A, Bozek, A, Bracko, M, Brodzicka, J, Browder, TE, Chang, MC, Chang, P, Chao, Y, Chen, A, Chen, KF, Chen, WT, Cheon, BG, Chiang, CC, Chistov, R, Cho, IS, Choi, SK, Choi, Y, K. Choi, Y, Cole, S, Dalseno, J, Danilov, M, Das, A, Dash, M, Dragic, J, Drutskoy, A, Eidelman, S, Epifanov, D, Fratina, S, Fujii, H, Fujikawa, M, Gabyshev, N, Garmash, A, Go, A, Gokhroo, G, Goldenzweig, P, Golob, B, Grosse Perdekamp, M, Guler, H, Ha, H, Haba, J, Hara, K, Hara, T, Hasegawa, Y, Hastings, NC, Hayasaka, K, Hayashii, H, Hazumi, M, Heffernan, D, Higuchi, T, Hinz, L, Hoedlmoser, H, Hokuue, T, Horii, Y, Hoshi, Y, Hoshina, K, Hou, S, Hou, WS, Hsiung, YB, Hyun, HJ, Igarashi, Y, Iijima, T, Ikado, K, Inami, K, Ishikawa, A, Ishino, H, Itoh, R, Iwabuchi, M, Iwasaki, M, Iwasaki, Y, Jacoby, C, Joshi, NJ, Kaga, M, Kah, DH, Kaji, H, Kajiwara, S, Kakuno, H, Kang, JH, Kapusta, P, Kataoka, SU, Katayama, N, Kawai, H, Kawasaki, T, Kibayashi, A, Kichimi, H, Kim, HJ, Kim, HO, Kim, JH, Kim, SK, Kim, YJ, Kinoshita, K, Korpar, S, Kozakai, Y, Krizan, P, Krokovny, P, Kumar, R, Kurihara, E, Kusaka, A, Kuzmin, A, Kwon, YJ, Lange, JS, Leder, G, Lee, J, Lee, JS, Lee, MJ, Lee, SE, Lesiak, T, Li, J, Limosani, A, Lin, SW, Liu, Y, Liventsev, D, MacNaughton, J, Majumder, G, Mandl, F, Marlow, D, Matsumura, T, Matyja, A, McOnie, S, Medvedeva, T, Mikami, Y, Mitaroff, W, Miyabayashi, K, Miyake, H, Miyata, H, Miyazaki, Y, Mizuk, R, R. Moloney, G, Mori, T, Mueller, J, Murakami, A, Nagamine, T, Nagasaka, Y, Nakahama, Y, Nakamura, I, Nakano, E, Nakao, M, Nakayama, H, Nakazawa, H, Natkaniec, Z, Neichi, K, Nishida, S, Nishimura, K, Nishio, Y, Nishizawa, I, Nitoh, O, Noguchi, S, Nozaki, T, Ogawa, A, Ogawa, S, Ohshima, T, Okuno, S, Olsen, SL, Ono, S, Ostrowicz, W, Ozaki, H, Pakhlov, P, Pakhlova, G, Palka, H, Park, CW, Park, H, Park, KS, Parslow, N, Peak, LS, Pernicka, M, Pestotnik, R, Peters, M, Piilonen, LE, Poluektov, A, Rorie, J, Rozanska, M, Sahoo, H, Sakai, Y, Sakamoto, H, Sakaue, H, Sarangi, TR, Satoyama, N, Sayeed, K, Schietinger, T, Schneider, O, Schönmeier, P, Schümann, J, Schwanda, C, Schwartz, AJ, Seidl, R, Sekiya, A, Senyo, K, Sevior, ME, Shang, L, Shapkin, M, Shen, CP, Shibuya, H, Shinomiya, S, Shiu, JG, Shwartz, B, Singh, JB, Sokolov, A, Solovieva, E, Somov, A, Stanic, S, Staric, M, Stypula, J, Sugiyama, A, Sumisawa, K, Sumiyoshi, T, Suzuki, S, Suzuki, SY, Tajima, O, Takasaki, F, Tamai, K, Tamura, N, Tanaka, M, Taniguchi, N, Taylor, GN, Teramoto, Y, Tikhomirov, I, Trabelsi, K, Tse, YF, Tsuboyama, T, Uchida, K, Uchida, Y, Uehara, S, Ueno, K, Uglov, T, Unno, Y, Uno, S, Urquijo, P, Ushiroda, Y, Usov, Y, Varner, G, Varvell, KE, Vervink, K, Villa, S, Vinokurova, A, Wang, CC, Wang, CH, Wang, J, Wang, MZ, Wang, P, Wang, XL, Watanabe, M, Watanabe, Y, Wedd, R, Wicht, J, Widhalm, L, Wiechczynski, J, Won, E, Yabsley, BD, Yamaguchi, A, Yamamoto, H, Yamaoka, M, Yamashita, Y, Yamauchi, M, Yuan, CZ, Yusa, Y, Zhang, CC, Zhang, LM, Zhang, ZP, Zhilich, V, Zhulanov, V, Zupanc, A & Zwahlen, N 2007, 'Search for B⁰ → ρ⁰ρ⁰ and non-resonant B⁰ → 4π', Paper presented at 23rd International Symposium on Lepton-Photon Interactions at High Energy, LP 2007, Daegu, Korea, Republic of, 8/13/07 - 8/18/07.

TY - CONF

T1 - Search for B0 → ρ0ρ0 and non-resonant B0 → 4π

AU - Abe, K.

AU - Adachi, I.

AU - Aihara, H.

AU - Arinstein, K.

AU - Aso, T.

AU - Aulchenko, V.

AU - Aushev, T.

AU - Aziz, T.

AU - Bahinipati, S.

AU - Bakich, A. M.

AU - Balagura, V.

AU - Ban, Y.

AU - Banerjee, S.

AU - Barberio, E.

AU - Bay, A.

AU - Bedny, I.

AU - Belous, K.

AU - Bhardwaj, V.

AU - Bitenc, U.

AU - Blyth, S.

AU - Bondar, A.

AU - Bozek, A.

AU - Bracko, M.

AU - Brodzicka, J.

AU - Browder, T. E.

AU - Chang, M. C.

AU - Chang, P.

AU - Chao, Y.

AU - Chen, A.

AU - Chen, K. F.

AU - Chen, W. T.

AU - Cheon, B. G.

AU - Chiang, C. C.

AU - Chistov, R.

AU - Cho, I. S.

AU - Choi, S. K.

AU - Choi, Y.

AU - K. Choi, Y.

AU - Cole, S.

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PY - 2007

Y1 - 2007

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=84886433958&partnerID=8YFLogxK

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M3 - Paper

AN - SCOPUS:84886433958

T2 - 23rd International Symposium on Lepton-Photon Interactions at High Energy, LP 2007

Y2 - 13 August 2007 through 18 August 2007

ER -

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

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