Improved measurements of the partial rate asymmetry in B → hh decays

Y. Chào, P. Chang, K. Abe, K. Abe, H. Aihara, Y. Asano, T. Aushev, S. Bahinipati, A. M. Bakich, Y. Ban, I. Bedny, U. Bitenc, I. Bizjak, S. Blyth, A. Bondar, M. Bračko, J. Brodzicka, T. E. Browder, K. F. Chen, B. G. CheonR. Chistov, S. K. Choi, Y. Choi, S. Cole, M. Danilov, M. Dash, L. Y. Dong, S. Eidelman, V. Eiges, S. Fratina, N. Gabyshev, T. Gershon, G. Gokhroo, B. Golob, R. Guo, J. Haba, N. C. Hastings, K. Hayasaka, H. Hayashii, M. Hazumi, T. Higuchi, L. Hinz, T. Hokuue, Y. Hoshi, W. S. Hou, Y. B. Hsiung, T. Iijima, A. Imoto, K. Inami, A. Ishikawa, R. Itoh, H. Iwasaki, Y. Iwasaki, H. Kakuno, J. H. Kang, J. S. Kang, N. Katayama, H. Kawai, T. Kawasaki, H. R. Khan, H. J. Kim, J. H. Kim, K. Kinoshita, P. Koppenburg, S. Korpar, P. Krokovny, Youngjoon Kwon, G. Leder, Y. J. Lee, T. Lesiak, J. Li, S. W. Lin, J. MacNaughton, F. Mandl, D. Marlow, T. Matsumoto, A. Matyja, W. Mitaroff, H. Miyake, H. Miyata, T. Mori, T. Nagamine, Y. Nagasaka, E. Nakano, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, T. Okabe, S. Okuno, S. L. Olsen, W. Ostrowicz, H. Ozaki, H. Palka, C. W. Park, H. Park, N. Parslow, L. E. Piilonen, M. Rozanska, H. Sagawa, Y. Sakai, N. Sato, O. Schneider, J. Schümann, A. J. Schwartz, S. Semenov, M. E. Sevior, H. Shibuya, B. Shwartz, V. Sidorov, A. Somov, N. Soni, R. Stamen, S. Stanič, M. Starič, K. Sumisawa, T. Sumiyoshi, S. Suzuki, O. Tajima, F. Takasaki, K. Tamai, N. Tamura, M. Tanaka, G. N. Taylor, Y. Teramoto, K. Trabelsi, T. Tsuboyama, T. Tsukamoto, S. Uehara, T. Uglov, K. Ueno, Y. Unno, S. Uno, G. Varner, K. E. Varvell, C. C. Wang, C. H. Wang, M. Watanabe, B. D. Yabsley, Y. Yamada, A. Yamaguchi, Y. Yamashita, M. Yamauchi, Heyoung Yang, J. Ying, S. L. Zang, J. Zhang, Z. P. Zhang, D. Žontar

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Abstract

We report improved measurements of the partial rate asymmetry (A CP) in B → hh decays with 140 fb -1 of data collected with the Belle detector at the KEKB e +e - collider. Here h stands for a charged or neutral pion or kaon and in total five decay modes are included: K ±π ±, K s 0π ±, K ±π 0, π ±π 0, and K s 0π 0. The flavor of the last decay mode is determined from the accompanying B meson. Using a data sample 4.7 times larger than that of our previous measurement, we find A CP(K ±π ±) - 0.088 ± 0.035 ± 0.013, 2.4σ from zero. Results for other decay modes are also presented.

Original languageEnglish
Article number031502
Pages (from-to)031502-1-031502-5
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume71
Issue number3
DOIs
Publication statusPublished - 2005 Feb

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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    Chào, Y., Chang, P., Abe, K., Abe, K., Aihara, H., Asano, Y., Aushev, T., Bahinipati, S., Bakich, A. M., Ban, Y., Bedny, I., Bitenc, U., Bizjak, I., Blyth, S., Bondar, A., Bračko, M., Brodzicka, J., Browder, T. E., Chen, K. F., ... Žontar, D. (2005). Improved measurements of the partial rate asymmetry in B → hh decays. Physical Review D - Particles, Fields, Gravitation and Cosmology, 71(3), 031502-1-031502-5. [031502]. https://doi.org/10.1103/PhysRevD.71.031502