Measurement of the ratio B (D0 → π+ π- π0) / B (D0 → K- π+ π0) and the time-integrated CP asymmetry in D0 → π+ π- π0

K. Arinstein, I. Adachi, H. Aihara, V. Aulchenko, T. Aushev, T. Aziz, S. Bahinipati, A. M. Bakich, V. Balagura, E. Barberio, A. Bay, I. Bedny, K. Belous, V. Bhardwaj, U. Bitenc, S. Blyth, A. Bondar, A. Bozek, M. Bračko, T. E. BrowderY. Chao, A. Chen, W. T. Chen, B. G. Cheon, R. Chistov, I. S. Cho, Y. Choi, S. Cole, J. Dalseno, M. Danilov, M. Dash, A. Drutskoy, S. Eidelman, D. Epifanov, N. Gabyshev, P. Goldenzweig, B. Golob, H. Ha, J. Haba, K. Hara, K. Hayasaka, H. Hayashii, M. Hazumi, Y. Hoshi, W. S. Hou, T. Iijima, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, N. J. Joshi, D. H. Kah, H. Kaji, J. H. Kang, N. Katayama, H. Kawai, T. Kawasaki, H. Kichimi, S. K. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, Y. Kozakai, P. Križan, P. Krokovny, R. Kumar, C. C. Kuo, Y. Kuroki, A. Kuzmin, Youngjoon Kwon, J. S. Lange, J. S. Lee, M. J. Lee, S. E. Lee, T. Lesiak, A. Limosani, S. W. Lin, C. Liu, Y. Liu, D. Liventsev, F. Mandl, S. McOnie, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, Y. Miyazaki, R. Mizuk, G. R. Moloney, T. Mori, E. Nakano, M. Nakao, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, H. Ozaki, P. Pakhlov, G. Pakhlova, C. W. Park, H. Park, K. S. Park, R. Pestotnik, L. E. Piilonen, A. Poluektov, H. Sahoo, Y. Sakai, O. Schneider, J. Schümann, C. Schwanda, A. J. Schwartz, K. Senyo, M. E. Sevior, M. Shapkin, V. Shebalin, H. Shibuya, J. G. Shiu, B. Shwartz, J. B. Singh, A. Sokolov, A. Somov, S. Stanič, M. Starič, T. Sumiyoshi, S. Y. Suzuki, F. Takasaki, M. Tanaka, G. N. Taylor, Y. Teramoto, I. Tikhomirov, S. Uehara, K. Ueno, T. Uglov, Y. Unno, S. Uno, Y. Usov, G. Varner, K. Vervink, S. Villa, A. Vinokurova, C. H. Wang, M. Z. Wang, P. Wang, X. L. Wang, Y. Watanabe, E. Won, B. D. Yabsley, H. Yamamoto, Y. Yamashita, C. C. Zhang, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc, O. Zyukova

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Abstract

We report a high-statistics measurement of the relative branching fraction B (D0 → π+ π- π0) / B (D0 → K- π+ π0) using a 532 fb-1 data sample collected with the Belle detector at the KEKB asymmetric-energy e+ e- collider. The measured value of the relative branching fraction is B (D0 → π+ π- π0) / B (D0 → K- π+ π0) = (10.12 ± 0.04 (stat) ± 0.18 (syst)) × 10-2, which has an accuracy comparable to the world average. We also present a measurement of the time-integrated CP asymmetry in D0 → π+ π- π0 decay. The result, ACP = (0.43 ± 1.30) %, shows no significant CP violation.

Original languageEnglish
Pages (from-to)102-110
Number of pages9
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume662
Issue number2
DOIs
Publication statusPublished - 2008 Apr 17

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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    Arinstein, K., Adachi, I., Aihara, H., Aulchenko, V., Aushev, T., Aziz, T., Bahinipati, S., Bakich, A. M., Balagura, V., Barberio, E., Bay, A., Bedny, I., Belous, K., Bhardwaj, V., Bitenc, U., Blyth, S., Bondar, A., Bozek, A., Bračko, M., ... Zyukova, O. (2008). Measurement of the ratio B (D0 → π+ π- π0) / B (D0 → K- π+ π0) and the time-integrated CP asymmetry in D0 → π+ π- π0. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 662(2), 102-110. https://doi.org/10.1016/j.physletb.2008.02.054