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Cinabro, D. Dossett, D. Dutta, D. Joffe, D. Kotchetkov, D. Liventsev, D. M. Asner, D. \\v{C}ervenkov, D. Y. Kim, E. Barberio, E. Nakano, E. Solovieva, E. Waheed, E. Widmann, E. Won, F. Tenchini, G. B. Mohanty, G. Bonvicini, G. Karyan, G. Pakhlova, G. Schnell, G. Varner, H. Aihara, H. Farhat, H. Hayashii, H. J. Kim, H. K. Moon, H. Miyata, H. Ono, H. Park, H. Sahoo, H. Ye, I. Adachi, I. Badhrees, I. Jaegle, I. S. Lee, J. Biswal, J. B. Kim, J. E. Fast, J.-G. Shiu, J. Haba, J. Kahn, J. Libby, J. MacNaughton, J. S. Lange, K. Chilikin, K. Cho, K. E. Varvell, K. Hayasaka, K. Inami, K. J. Nath, K. Kinoshita, K. K. Joo, K. Miyabayashi, K. M. Williams, K. Senyo, K. Tanida, K. T. Kim, K. Trabelsi, L. E. Piilonen, L. Li, L. Li Gioi, L. Pes\\'antez, L. Santelj, M. Barrett, M. Berger, M. Bra\\v{c}ko, M.-C. Chang, M. E. Sevior, M. J. Kim, M. Masuda, M. Merola, M. Nakao, M. Nayak, M. Ritter, M. Salehi, M. Stari\\v{c}, M. Uchida, M. Watanabe, M.-Z. Wang, N. Dash, N. Gabyshev, N. K. Nisar, O. Schneider, P. Goldenzweig, P. Katrenko, P. Kody\\v{s}, P. Kri\\v{z}an, P. Krokovny, P. Pakhlov, P. Urquijo, P. Wang, R. Ayad, R. Gillard, R. Itoh, R. Kulasiri, R. Mizuk, R. Mussa, R. Pestotnik, S. Al Said, S. Di Carlo, S. Eidelman, S. H. Kim, S. Korpar, S. Nishida, S. Ogawa, S. Pardi, S. Sandilya, S. Uehara, S. Uno, T.-A. Shibata, T. Aushev, T. Bloomfield, T. E. Browder, T. Ferber, T. Hara, The Belle Collaboration: T. Julius, T. Iijima, T. Kawasaki, T. Kuhr, T. Luo, T. Matsuda, T. Mori, T. Nanut, T. Sanuki, T. Sumiyoshi, T. Uglov, U. Tamponi, V. Aulchenko, V. Babu, V. Bansal, V. Bhardwaj, V. Chekelian, V. Gaur, V. Savinov, V. Shebalin, V. Zhilich, V. Zhulanov, W.-S. Hou, W. W. Jacobs, Y. Chao, Y. Choi, Y. Iwasaki, Y. Jin, Y. J. Kim, Y.-J. Kwon, Y. Li, Y. Sakai, Y. Sato, Y. Seino, Y. Unno, Y. Usov, Y. Watanabe, Y. Yamashita, Y. Yusa, Z. Dole\\v{z}al, Z. Dr\\'asal, Z. Natkaniec, Z. P. Zhang","submitted_at":"2017-05-05T04:29:57Z","abstract_excerpt":"We measure the branching fraction and $CP$ violation asymmetry in the decay $B^{0}\\to \\pi^{0}\\pi^{0}$, using a data sample of $752\\times 10^{6}$ $B\\bar{B}$ pairs collected at the $\\Upsilon(4S)$ resonance with the Belle detector at the KEKB $e^{+}e^{-}$ collider. The obtained branching fraction and direct $CP$ asymmetry are $ \\mathcal{B}(B\\to \\pi^{0}\\pi^{0}) = [1.31 \\pm 0.19~ \\text{(stat.)} \\pm 0.19~ \\text{(syst.)}] \\times 10^{-6}$ and $\n  A_{CP} = +0.14 \\pm 0.36~ \\text{(stat.)} \\pm 0.10~ \\text{(syst.)}, $ respectively. 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Bobrov, A. Bondar, A. Bozek, A. Chen, A. Garmash, A. Ishikawa, A. J. Schwartz, A. Kuzmin, A. M. Bakich, A. Sokolov, A. Vossen, A. Zupanc, B. Bhuyan, B. G. Cheon, B. G. Fulsom, B. Pal, B. Shwartz, C. H. Li, C. H. Wang, C. Kiesling, C.-L. Hsu, C. Pulvermacher, C. Schwanda, C.-S. Park, C. Van Hulse, C. Z. Yuan, D. Cinabro, D. Dossett, D. Dutta, D. Joffe, D. Kotchetkov, D. Liventsev, D. M. Asner, D. \\v{C}ervenkov, D. Y. Kim, E. Barberio, E. Nakano, E. Solovieva, E. Waheed, E. Widmann, E. Won, F. Tenchini, G. B. Mohanty, G. Bonvicini, G. Karyan, G. Pakhlova, G. Schnell, G. Varner, H. Aihara, H. Farhat, H. Hayashii, H. J. Kim, H. K. Moon, H. Miyata, H. Ono, H. Park, H. Sahoo, H. Ye, I. Adachi, I. Badhrees, I. Jaegle, I. S. Lee, J. Biswal, J. B. Kim, J. E. Fast, J.-G. Shiu, J. Haba, J. Kahn, J. Libby, J. MacNaughton, J. S. Lange, K. Chilikin, K. Cho, K. E. Varvell, K. Hayasaka, K. Inami, K. J. Nath, K. Kinoshita, K. K. Joo, K. Miyabayashi, K. M. Williams, K. Senyo, K. Tanida, K. T. Kim, K. Trabelsi, L. E. Piilonen, L. Li, L. Li Gioi, L. Pes\\'antez, L. Santelj, M. Barrett, M. Berger, M. Bra\\v{c}ko, M.-C. Chang, M. E. Sevior, M. J. Kim, M. Masuda, M. Merola, M. Nakao, M. Nayak, M. Ritter, M. Salehi, M. Stari\\v{c}, M. Uchida, M. Watanabe, M.-Z. Wang, N. Dash, N. Gabyshev, N. K. Nisar, O. Schneider, P. Goldenzweig, P. Katrenko, P. Kody\\v{s}, P. Kri\\v{z}an, P. Krokovny, P. Pakhlov, P. Urquijo, P. Wang, R. Ayad, R. Gillard, R. Itoh, R. Kulasiri, R. Mizuk, R. Mussa, R. Pestotnik, S. Al Said, S. Di Carlo, S. Eidelman, S. H. Kim, S. Korpar, S. Nishida, S. Ogawa, S. Pardi, S. Sandilya, S. Uehara, S. Uno, T.-A. Shibata, T. Aushev, T. Bloomfield, T. E. Browder, T. Ferber, T. Hara, The Belle Collaboration: T. Julius, T. Iijima, T. Kawasaki, T. Kuhr, T. Luo, T. Matsuda, T. Mori, T. Nanut, T. Sanuki, T. Sumiyoshi, T. Uglov, U. Tamponi, V. Aulchenko, V. Babu, V. Bansal, V. Bhardwaj, V. Chekelian, V. Gaur, V. Savinov, V. Shebalin, V. Zhilich, V. Zhulanov, W.-S. Hou, W. W. Jacobs, Y. Chao, Y. Choi, Y. Iwasaki, Y. Jin, Y. J. Kim, Y.-J. Kwon, Y. Li, Y. Sakai, Y. Sato, Y. Seino, Y. Unno, Y. Usov, Y. Watanabe, Y. Yamashita, Y. Yusa, Z. Dole\\v{z}al, Z. Dr\\'asal, Z. Natkaniec, Z. P. Zhang","submitted_at":"2017-05-05T04:29:57Z","abstract_excerpt":"We measure the branching fraction and $CP$ violation asymmetry in the decay $B^{0}\\to \\pi^{0}\\pi^{0}$, using a data sample of $752\\times 10^{6}$ $B\\bar{B}$ pairs collected at the $\\Upsilon(4S)$ resonance with the Belle detector at the KEKB $e^{+}e^{-}$ collider. The obtained branching fraction and direct $CP$ asymmetry are $ \\mathcal{B}(B\\to \\pi^{0}\\pi^{0}) = [1.31 \\pm 0.19~ \\text{(stat.)} \\pm 0.19~ \\text{(syst.)}] \\times 10^{-6}$ and $\n  A_{CP} = +0.14 \\pm 0.36~ \\text{(stat.)} \\pm 0.10~ \\text{(syst.)}, $ respectively. 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