Measurement of B0→π+π-π+π- decays and search for B0→ρ0ρ0

C. C. Chiang, I. Adachi, H. Aihara, K. Arinstein, V. Aulchenko, T. Aushev, A. M. Bakich, I. Bedny, V. Bhardwaj, U. Bitenc, A. Bozek, M. Bračko, T. E. Browder, P. Chang, Y. Chao, A. Chen, B. G. Cheon, R. Chistov, I. S. Cho, S. K. ChoiY. Choi, J. Dalseno, M. Dash, W. Dungel, S. Eidelman, N. Gabyshev, P. Goldenzweig, B. Golob, H. Ha, J. Haba, T. Hara, K. Hayasaka, M. Hazumi, D. Heffernan, Y. Hoshi, W. S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, K. Inami, A. Ishikawa, Hirokazu Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, D. H. Kah, J. H. Kang, H. Kawai, T. Kawasaki, H. Kichimi, H. J. Kim, H. O. Kim, S. K. Kim, Y. I. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, P. Krizan, P. Krokovny, R. Kumar, Y. J. Kwon, S. H. Kyeong, J. S. Lange, J. S. Lee, S. E. Lee, J. Li, A. Limosani, S. W. Lin, C. Liu, D. Liventsev, F. Mandl, A. Matyja, S. McOnie, H. Miyata, R. Mizuk, T. Mori, E. Nakano, M. Nakao, Z. Natkaniec, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, W. Ostrowicz, H. Ozaki, P. Pakhlov, G. Pakhlova, C. W. Park, H. Park, H. K. Park, L. S. Peak, R. Pestotnik, L. E. Piilonen, H. Sahoo, Y. Sakai, O. Schneider, J. Schümann, C. Schwanda, A. J. Schwartz, K. Senyo, M. E. Sevior, M. Shapkin, C. P. Shen, J. G. Shiu, B. Shwartz, J. B. Singh, A. Somov, S. Stanič, M. Starič, T. Sumiyoshi, N. Tamura, M. Tanaka, G. N. Taylor, Y. Teramoto, I. Tikhomirov, K. Trabelsi, S. Uehara, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Usov, G. Varner, K. E. Varvell, K. Vervink, A. Vinokurova, C. C. Wang, C. H. Wang, M. Z. Wang, P. Wang, X. L. Wang, M. Watanabe, Y. Watanabe, R. Wedd, J. Wicht, E. Won, B. D. Yabsley, Y. Yamashita, M. Yamauchi, Z. P. Zhang, V. Zhilich, V. Zhulanov, T. Zivko, A. Zupanc, O. Zyukova

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

We report on a search for the decay B0→ρ0ρ0 and other charmless modes with a π+π-π+π- final state, including B0→ρ0π+π-, nonresonant B0→4π±, B0→ρ0f0(980), B0→f0(980)f0(980) and B0→f0(980)π+π-. These results are obtained from a data sample containing 657×106 BB̄ pairs collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. We set an upper limit on B(B0→ρ0ρ0) of 1.0×10-6 at the 90% confidence level (C.L.). From our B0→ρ0ρ0 measurement and an isospin analysis, we determine the Cabibbo-Kobayashi-Maskawa phase 2 to be 91.7±14.9 degrees. We find excesses in B0→ρ0π+π- and nonresonant B0→4π± with 1.3σ and 2.5σ significance, respectively. The corresponding branching fractions are less than 12.0×10-6 and 19.3×10-6 at the 90% C.L. In addition, we set 90% C.L. upper limits as follows: B(B0→ρ0f0(980))

Original languageEnglish
Article number111102
JournalPhysical Review D
Volume78
Issue number11
DOIs
Publication statusPublished - Dec 1 2008

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decay
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ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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Chiang, C. C., Adachi, I., Aihara, H., Arinstein, K., Aulchenko, V., Aushev, T., ... Zyukova, O. (2008). Measurement of B0→π+π-π+π- decays and search for B0→ρ0ρ0. Physical Review D, 78(11), [111102]. https://doi.org/10.1103/PhysRevD.78.111102

Measurement of B0→π+π-π+π- decays and search for B0→ρ0ρ0. / Chiang, C. C.; Adachi, I.; Aihara, H.; Arinstein, K.; Aulchenko, V.; Aushev, T.; Bakich, A. M.; Bedny, I.; Bhardwaj, V.; Bitenc, U.; Bozek, A.; Bračko, M.; Browder, T. E.; Chang, P.; Chao, Y.; Chen, A.; Cheon, B. G.; Chistov, R.; Cho, I. S.; Choi, S. K.; Choi, Y.; Dalseno, J.; Dash, M.; Dungel, W.; Eidelman, S.; Gabyshev, N.; Goldenzweig, P.; Golob, B.; Ha, H.; Haba, J.; Hara, T.; Hayasaka, K.; Hazumi, M.; Heffernan, D.; Hoshi, Y.; Hou, W. S.; Hsiung, Y. B.; Hyun, H. J.; Iijima, T.; Inami, K.; Ishikawa, A.; Ishino, Hirokazu; Itoh, R.; Iwasaki, M.; Iwasaki, Y.; Kah, D. H.; Kang, J. H.; Kawai, H.; Kawasaki, T.; Kichimi, H.; Kim, H. J.; Kim, H. O.; Kim, S. K.; Kim, Y. I.; Kim, Y. J.; Kinoshita, K.; Korpar, S.; Krizan, P.; Krokovny, P.; Kumar, R.; Kwon, Y. J.; Kyeong, S. H.; Lange, J. S.; Lee, J. S.; Lee, S. E.; Li, J.; Limosani, A.; Lin, S. W.; Liu, C.; Liventsev, D.; Mandl, F.; Matyja, A.; McOnie, S.; Miyata, H.; Mizuk, R.; Mori, T.; Nakano, E.; Nakao, M.; Natkaniec, Z.; Nishida, S.; Nitoh, O.; Ogawa, S.; Ohshima, T.; Okuno, S.; Olsen, S. L.; Ostrowicz, W.; Ozaki, H.; Pakhlov, P.; Pakhlova, G.; Park, C. W.; Park, H.; Park, H. K.; Peak, L. S.; Pestotnik, R.; Piilonen, L. E.; Sahoo, H.; Sakai, Y.; Schneider, O.; Schümann, J.; Schwanda, C.; Schwartz, A. J.; Senyo, K.; Sevior, M. E.; Shapkin, M.; Shen, C. P.; Shiu, J. G.; Shwartz, B.; Singh, J. B.; Somov, A.; Stanič, S.; Starič, M.; Sumiyoshi, T.; Tamura, N.; Tanaka, M.; Taylor, G. N.; Teramoto, Y.; Tikhomirov, I.; Trabelsi, K.; Uehara, S.; Uglov, T.; Unno, Y.; Uno, S.; Urquijo, P.; Usov, Y.; Varner, G.; Varvell, K. E.; Vervink, K.; Vinokurova, A.; Wang, C. C.; Wang, C. H.; Wang, M. Z.; Wang, P.; Wang, X. L.; Watanabe, M.; Watanabe, Y.; Wedd, R.; Wicht, J.; Won, E.; Yabsley, B. D.; Yamashita, Y.; Yamauchi, M.; Zhang, Z. P.; Zhilich, V.; Zhulanov, V.; Zivko, T.; Zupanc, A.; Zyukova, O.

In: Physical Review D, Vol. 78, No. 11, 111102, 01.12.2008.

Research output: Contribution to journalArticle

Chiang, CC, Adachi, I, Aihara, H, Arinstein, K, Aulchenko, V, Aushev, T, Bakich, AM, Bedny, I, Bhardwaj, V, Bitenc, U, Bozek, A, Bračko, M, Browder, TE, Chang, P, Chao, Y, Chen, A, Cheon, BG, Chistov, R, Cho, IS, Choi, SK, Choi, Y, Dalseno, J, Dash, M, Dungel, W, Eidelman, S, Gabyshev, N, Goldenzweig, P, Golob, B, Ha, H, Haba, J, Hara, T, Hayasaka, K, Hazumi, M, Heffernan, D, Hoshi, Y, Hou, WS, Hsiung, YB, Hyun, HJ, Iijima, T, Inami, K, Ishikawa, A, Ishino, H, Itoh, R, Iwasaki, M, Iwasaki, Y, Kah, DH, Kang, JH, Kawai, H, Kawasaki, T, Kichimi, H, Kim, HJ, Kim, HO, Kim, SK, Kim, YI, Kim, YJ, Kinoshita, K, Korpar, S, Krizan, P, Krokovny, P, Kumar, R, Kwon, YJ, Kyeong, SH, Lange, JS, Lee, JS, Lee, SE, Li, J, Limosani, A, Lin, SW, Liu, C, Liventsev, D, Mandl, F, Matyja, A, McOnie, S, Miyata, H, Mizuk, R, Mori, T, Nakano, E, Nakao, M, Natkaniec, Z, Nishida, S, Nitoh, O, Ogawa, S, Ohshima, T, Okuno, S, Olsen, SL, Ostrowicz, W, Ozaki, H, Pakhlov, P, Pakhlova, G, Park, CW, Park, H, Park, HK, Peak, LS, Pestotnik, R, Piilonen, LE, Sahoo, H, Sakai, Y, Schneider, O, Schümann, J, Schwanda, C, Schwartz, AJ, Senyo, K, Sevior, ME, Shapkin, M, Shen, CP, Shiu, JG, Shwartz, B, Singh, JB, Somov, A, Stanič, S, Starič, M, Sumiyoshi, T, Tamura, N, Tanaka, M, Taylor, GN, Teramoto, Y, Tikhomirov, I, Trabelsi, K, Uehara, S, Uglov, T, Unno, Y, Uno, S, Urquijo, P, Usov, Y, Varner, G, Varvell, KE, Vervink, K, Vinokurova, A, Wang, CC, Wang, CH, Wang, MZ, Wang, P, Wang, XL, Watanabe, M, Watanabe, Y, Wedd, R, Wicht, J, Won, E, Yabsley, BD, Yamashita, Y, Yamauchi, M, Zhang, ZP, Zhilich, V, Zhulanov, V, Zivko, T, Zupanc, A & Zyukova, O 2008, 'Measurement of B0→π+π-π+π- decays and search for B0→ρ0ρ0', Physical Review D, vol. 78, no. 11, 111102. https://doi.org/10.1103/PhysRevD.78.111102
Chiang CC, Adachi I, Aihara H, Arinstein K, Aulchenko V, Aushev T et al. Measurement of B0→π+π-π+π- decays and search for B0→ρ0ρ0. Physical Review D. 2008 Dec 1;78(11). 111102. https://doi.org/10.1103/PhysRevD.78.111102
Chiang, C. C. ; Adachi, I. ; Aihara, H. ; Arinstein, K. ; Aulchenko, V. ; Aushev, T. ; Bakich, A. M. ; Bedny, I. ; Bhardwaj, V. ; Bitenc, U. ; Bozek, A. ; Bračko, M. ; Browder, T. E. ; Chang, P. ; Chao, Y. ; Chen, A. ; Cheon, B. G. ; Chistov, R. ; Cho, I. S. ; Choi, S. K. ; Choi, Y. ; Dalseno, J. ; Dash, M. ; Dungel, W. ; Eidelman, S. ; Gabyshev, N. ; Goldenzweig, P. ; Golob, B. ; Ha, H. ; Haba, J. ; Hara, T. ; Hayasaka, K. ; Hazumi, M. ; Heffernan, D. ; Hoshi, Y. ; Hou, W. S. ; Hsiung, Y. B. ; Hyun, H. J. ; Iijima, T. ; Inami, K. ; Ishikawa, A. ; Ishino, Hirokazu ; Itoh, R. ; Iwasaki, M. ; Iwasaki, Y. ; Kah, D. H. ; Kang, J. H. ; Kawai, H. ; Kawasaki, T. ; Kichimi, H. ; Kim, H. J. ; Kim, H. O. ; Kim, S. K. ; Kim, Y. I. ; Kim, Y. J. ; Kinoshita, K. ; Korpar, S. ; Krizan, P. ; Krokovny, P. ; Kumar, R. ; Kwon, Y. J. ; Kyeong, S. H. ; Lange, J. S. ; Lee, J. S. ; Lee, S. E. ; Li, J. ; Limosani, A. ; Lin, S. W. ; Liu, C. ; Liventsev, D. ; Mandl, F. ; Matyja, A. ; McOnie, S. ; Miyata, H. ; Mizuk, R. ; Mori, T. ; Nakano, E. ; Nakao, M. ; Natkaniec, Z. ; Nishida, S. ; Nitoh, O. ; Ogawa, S. ; Ohshima, T. ; Okuno, S. ; Olsen, S. L. ; Ostrowicz, W. ; Ozaki, H. ; Pakhlov, P. ; Pakhlova, G. ; Park, C. W. ; Park, H. ; Park, H. K. ; Peak, L. S. ; Pestotnik, R. ; Piilonen, L. E. ; Sahoo, H. ; Sakai, Y. ; Schneider, O. ; Schümann, J. ; Schwanda, C. ; Schwartz, A. J. ; Senyo, K. ; Sevior, M. E. ; Shapkin, M. ; Shen, C. P. ; Shiu, J. G. ; Shwartz, B. ; Singh, J. B. ; Somov, A. ; Stanič, S. ; Starič, M. ; Sumiyoshi, T. ; Tamura, N. ; Tanaka, M. ; Taylor, G. N. ; Teramoto, Y. ; Tikhomirov, I. ; Trabelsi, K. ; Uehara, S. ; Uglov, T. ; Unno, Y. ; Uno, S. ; Urquijo, P. ; Usov, Y. ; Varner, G. ; Varvell, K. E. ; Vervink, K. ; Vinokurova, A. ; Wang, C. C. ; Wang, C. H. ; Wang, M. Z. ; Wang, P. ; Wang, X. L. ; Watanabe, M. ; Watanabe, Y. ; Wedd, R. ; Wicht, J. ; Won, E. ; Yabsley, B. D. ; Yamashita, Y. ; Yamauchi, M. ; Zhang, Z. P. ; Zhilich, V. ; Zhulanov, V. ; Zivko, T. ; Zupanc, A. ; Zyukova, O. / Measurement of B0→π+π-π+π- decays and search for B0→ρ0ρ0. In: Physical Review D. 2008 ; Vol. 78, No. 11.
@article{8b3bb83e69af4aee956f990031cafc1d,
title = "Measurement of B0→π+π-π+π- decays and search for B0→ρ0ρ0",
abstract = "We report on a search for the decay B0→ρ0ρ0 and other charmless modes with a π+π-π+π- final state, including B0→ρ0π+π-, nonresonant B0→4π±, B0→ρ0f0(980), B0→f0(980)f0(980) and B0→f0(980)π+π-. These results are obtained from a data sample containing 657×106 BB̄ pairs collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. We set an upper limit on B(B0→ρ0ρ0) of 1.0×10-6 at the 90{\%} confidence level (C.L.). From our B0→ρ0ρ0 measurement and an isospin analysis, we determine the Cabibbo-Kobayashi-Maskawa phase 2 to be 91.7±14.9 degrees. We find excesses in B0→ρ0π+π- and nonresonant B0→4π± with 1.3σ and 2.5σ significance, respectively. The corresponding branching fractions are less than 12.0×10-6 and 19.3×10-6 at the 90{\%} C.L. In addition, we set 90{\%} C.L. upper limits as follows: B(B0→ρ0f0(980))",
author = "Chiang, {C. C.} and I. Adachi and H. Aihara and K. Arinstein and V. Aulchenko and T. Aushev and Bakich, {A. M.} and I. Bedny and V. Bhardwaj and U. Bitenc and A. Bozek and M. Bračko and Browder, {T. E.} and P. Chang and Y. Chao and A. Chen and Cheon, {B. G.} and R. Chistov and Cho, {I. S.} and Choi, {S. K.} and Y. Choi and J. Dalseno and M. Dash and W. Dungel and S. Eidelman and N. Gabyshev and P. Goldenzweig and B. Golob and H. Ha and J. Haba and T. Hara and K. Hayasaka and M. Hazumi and D. Heffernan and Y. Hoshi and Hou, {W. S.} and Hsiung, {Y. B.} and Hyun, {H. J.} and T. Iijima and K. Inami and A. Ishikawa and Hirokazu Ishino and R. Itoh and M. Iwasaki and Y. Iwasaki and Kah, {D. H.} and Kang, {J. H.} and H. Kawai and T. Kawasaki and H. Kichimi and Kim, {H. J.} and Kim, {H. O.} and Kim, {S. K.} and Kim, {Y. I.} and Kim, {Y. J.} and K. Kinoshita and S. Korpar and P. Krizan and P. Krokovny and R. Kumar and Kwon, {Y. J.} and Kyeong, {S. H.} and Lange, {J. S.} and Lee, {J. S.} and Lee, {S. E.} and J. Li and A. Limosani and Lin, {S. W.} and C. Liu and D. Liventsev and F. Mandl and A. Matyja and S. McOnie and H. Miyata and R. Mizuk and T. Mori and E. Nakano and M. Nakao and Z. Natkaniec and S. Nishida and O. Nitoh and S. Ogawa and T. Ohshima and S. Okuno and Olsen, {S. L.} and W. Ostrowicz and H. Ozaki and P. Pakhlov and G. Pakhlova and Park, {C. W.} and H. Park and Park, {H. K.} and Peak, {L. S.} and R. Pestotnik and Piilonen, {L. E.} and H. Sahoo and Y. Sakai and O. Schneider and J. Sch{\"u}mann and C. Schwanda and Schwartz, {A. J.} and K. Senyo and Sevior, {M. E.} and M. Shapkin and Shen, {C. P.} and Shiu, {J. G.} and B. Shwartz and Singh, {J. B.} and A. Somov and S. Stanič and M. Starič and T. Sumiyoshi and N. Tamura and M. Tanaka and Taylor, {G. N.} and Y. Teramoto and I. Tikhomirov and K. Trabelsi and S. Uehara and T. Uglov and Y. Unno and S. Uno and P. Urquijo and Y. Usov and G. Varner and Varvell, {K. E.} and K. Vervink and A. Vinokurova and Wang, {C. C.} and Wang, {C. H.} and Wang, {M. Z.} and P. Wang and Wang, {X. L.} and M. Watanabe and Y. Watanabe and R. Wedd and J. Wicht and E. Won and Yabsley, {B. D.} and Y. Yamashita and M. Yamauchi and Zhang, {Z. P.} and V. Zhilich and V. Zhulanov and T. Zivko and A. Zupanc and O. Zyukova",
year = "2008",
month = "12",
day = "1",
doi = "10.1103/PhysRevD.78.111102",
language = "English",
volume = "78",
journal = "Physical review D: Particles and fields",
issn = "0556-2821",
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TY - JOUR

T1 - Measurement of B0→π+π-π+π- decays and search for B0→ρ0ρ0

AU - Chiang, C. C.

AU - Adachi, I.

AU - Aihara, H.

AU - Arinstein, K.

AU - Aulchenko, V.

AU - Aushev, T.

AU - Bakich, A. M.

AU - Bedny, I.

AU - Bhardwaj, V.

AU - Bitenc, U.

AU - Bozek, A.

AU - Bračko, M.

AU - Browder, T. E.

AU - Chang, P.

AU - Chao, Y.

AU - Chen, A.

AU - Cheon, B. G.

AU - Chistov, R.

AU - Cho, I. S.

AU - Choi, S. K.

AU - Choi, Y.

AU - Dalseno, J.

AU - Dash, M.

AU - Dungel, W.

AU - Eidelman, S.

AU - Gabyshev, N.

AU - Goldenzweig, P.

AU - Golob, B.

AU - Ha, H.

AU - Haba, J.

AU - Hara, T.

AU - Hayasaka, K.

AU - Hazumi, M.

AU - Heffernan, D.

AU - Hoshi, Y.

AU - Hou, W. S.

AU - Hsiung, Y. B.

AU - Hyun, H. J.

AU - Iijima, T.

AU - Inami, K.

AU - Ishikawa, A.

AU - Ishino, Hirokazu

AU - Itoh, R.

AU - Iwasaki, M.

AU - Iwasaki, Y.

AU - Kah, D. H.

AU - Kang, J. H.

AU - Kawai, H.

AU - Kawasaki, T.

AU - Kichimi, H.

AU - Kim, H. J.

AU - Kim, H. O.

AU - Kim, S. K.

AU - Kim, Y. I.

AU - Kim, Y. J.

AU - Kinoshita, K.

AU - Korpar, S.

AU - Krizan, P.

AU - Krokovny, P.

AU - Kumar, R.

AU - Kwon, Y. J.

AU - Kyeong, S. H.

AU - Lange, J. S.

AU - Lee, J. S.

AU - Lee, S. E.

AU - Li, J.

AU - Limosani, A.

AU - Lin, S. W.

AU - Liu, C.

AU - Liventsev, D.

AU - Mandl, F.

AU - Matyja, A.

AU - McOnie, S.

AU - Miyata, H.

AU - Mizuk, R.

AU - Mori, T.

AU - Nakano, E.

AU - Nakao, M.

AU - Natkaniec, Z.

AU - Nishida, S.

AU - Nitoh, O.

AU - Ogawa, S.

AU - Ohshima, T.

AU - Okuno, S.

AU - Olsen, S. L.

AU - Ostrowicz, W.

AU - Ozaki, H.

AU - Pakhlov, P.

AU - Pakhlova, G.

AU - Park, C. W.

AU - Park, H.

AU - Park, H. K.

AU - Peak, L. S.

AU - Pestotnik, R.

AU - Piilonen, L. E.

AU - Sahoo, H.

AU - Sakai, Y.

AU - Schneider, O.

AU - Schümann, J.

AU - Schwanda, C.

AU - Schwartz, A. J.

AU - Senyo, K.

AU - Sevior, M. E.

AU - Shapkin, M.

AU - Shen, C. P.

AU - Shiu, J. G.

AU - Shwartz, B.

AU - Singh, J. B.

AU - Somov, A.

AU - Stanič, S.

AU - Starič, M.

AU - Sumiyoshi, T.

AU - Tamura, N.

AU - Tanaka, M.

AU - Taylor, G. N.

AU - Teramoto, Y.

AU - Tikhomirov, I.

AU - Trabelsi, K.

AU - Uehara, S.

AU - Uglov, T.

AU - Unno, Y.

AU - Uno, S.

AU - Urquijo, P.

AU - Usov, Y.

AU - Varner, G.

AU - Varvell, K. E.

AU - Vervink, K.

AU - Vinokurova, A.

AU - Wang, C. C.

AU - Wang, C. H.

AU - Wang, M. Z.

AU - Wang, P.

AU - Wang, X. L.

AU - Watanabe, M.

AU - Watanabe, Y.

AU - Wedd, R.

AU - Wicht, J.

AU - Won, E.

AU - Yabsley, B. D.

AU - Yamashita, Y.

AU - Yamauchi, M.

AU - Zhang, Z. P.

AU - Zhilich, V.

AU - Zhulanov, V.

AU - Zivko, T.

AU - Zupanc, A.

AU - Zyukova, O.

PY - 2008/12/1

Y1 - 2008/12/1

N2 - We report on a search for the decay B0→ρ0ρ0 and other charmless modes with a π+π-π+π- final state, including B0→ρ0π+π-, nonresonant B0→4π±, B0→ρ0f0(980), B0→f0(980)f0(980) and B0→f0(980)π+π-. These results are obtained from a data sample containing 657×106 BB̄ pairs collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. We set an upper limit on B(B0→ρ0ρ0) of 1.0×10-6 at the 90% confidence level (C.L.). From our B0→ρ0ρ0 measurement and an isospin analysis, we determine the Cabibbo-Kobayashi-Maskawa phase 2 to be 91.7±14.9 degrees. We find excesses in B0→ρ0π+π- and nonresonant B0→4π± with 1.3σ and 2.5σ significance, respectively. The corresponding branching fractions are less than 12.0×10-6 and 19.3×10-6 at the 90% C.L. In addition, we set 90% C.L. upper limits as follows: B(B0→ρ0f0(980))

AB - We report on a search for the decay B0→ρ0ρ0 and other charmless modes with a π+π-π+π- final state, including B0→ρ0π+π-, nonresonant B0→4π±, B0→ρ0f0(980), B0→f0(980)f0(980) and B0→f0(980)π+π-. These results are obtained from a data sample containing 657×106 BB̄ pairs collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. We set an upper limit on B(B0→ρ0ρ0) of 1.0×10-6 at the 90% confidence level (C.L.). From our B0→ρ0ρ0 measurement and an isospin analysis, we determine the Cabibbo-Kobayashi-Maskawa phase 2 to be 91.7±14.9 degrees. We find excesses in B0→ρ0π+π- and nonresonant B0→4π± with 1.3σ and 2.5σ significance, respectively. The corresponding branching fractions are less than 12.0×10-6 and 19.3×10-6 at the 90% C.L. In addition, we set 90% C.L. upper limits as follows: B(B0→ρ0f0(980))

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U2 - 10.1103/PhysRevD.78.111102

DO - 10.1103/PhysRevD.78.111102

M3 - Article

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VL - 78

JO - Physical review D: Particles and fields

JF - Physical review D: Particles and fields

SN - 0556-2821

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