Improved measurement of the partial-rate CP asymmetry in B +→K0π+ and B -→K̄0π- decays

Y. Unno, K. Suzuki, K. Abe, T. Abe, I. Adachi, H. Aihara, M. Akatsu, Y. Asano, T. Aso, V. Aulchenko, T. Aushev, S. Bahinipati, A. M. Bakich, Y. Ban, S. Banerjee, A. Bay, I. Bedny, P. K. Behera, I. Bizjak, A. BondarA. Bozek, M. Bračko, J. Brodzicka, T. E. Browder, B. C.K. Casey, P. Chang, Y. Chao, K. F. Chen, B. G. Cheon, R. Chistov, S. K. Choi, Y. Choi, Y. K. Choi, M. Danilov, L. Y. Dong, J. Dragic, A. Drutskoy, S. Eidelman, V. Eiges, Y. Enari, F. Fang, N. Gabyshev, A. Garmash, T. Gershon, B. Golob, R. Guo, J. Haba, F. Handa, H. Hayashii, M. Hazumi, L. Hinz, T. Hokuue, Y. Hoshi, W. S. Hou, H. C. Huang, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, H. Iwasaki, Y. Iwasaki, H. K. Jang, Ju Hwan Kang, J. S. Kang, P. Kapusta, S. U. Kataoka, N. Katayama, H. Kawai, N. Kawamura, T. Kawasaki, H. Kichimi, D. W. Kim, H. J. Kim, H. Kim, J. H. Kim, S. K. Kim, K. Kinoshita, S. Kobayashi, S. Korpar, P. Križan, P. Krokovny, R. Kulasiri, S. Kumar, A. Kuzmin, Youngjoon Kwon, J. S. Lange, G. Leder, S. H. Lee, J. Li, A. Limosani, S. W. Lin, D. Liventsev, J. MacNaughton, F. Mandl, D. Marlow, H. Matsumoto, T. Matsumoto, A. Matyja, W. Mitaroff, H. Miyake, H. Miyata, T. Mori, A. Murakami, T. Nagamine, Y. Nagasaka, T. Nakadaira, E. Nakano, M. Nakao, H. Nakazawa, J. W. Nam, Z. Natkaniec, S. Nishida, O. Nitoh, T. Nozaki, S. Ogawa, T. Ohshima, T. Okabe, S. Okuno, S. L. Olsen, W. Ostrowicz, H. Ozaki, P. Pakhlov, H. Palka, C. W. Park, H. Park, K. S. Park, L. S. Peak, J. P. Perroud, L. E. Piilonen, N. Root, H. Sagawa, S. Saitoh, Y. Sakai, M. Satapathy, A. Satpathy, O. Schneider, A. J. Schwartz, T. Seki, S. Semenov, K. Senyo, M. E. Sevior, T. Shibata, J. B. Singh, N. Soni, S. Stanič, M. Starič, A. Sugi, K. Sumisawa, T. Sumiyoshi, S. Suzuki, S. K. Swain, T. Takahashi, F. Takasaki, J. Tanaka, M. Tanaka, G. N. Taylor, Y. Teramoto, T. Tomura, K. Trabelsi, T. Tsuboyama, T. Tsukamoto, S. Uehara, K. Ueno, S. Uno, G. Varner, K. E. Varvell, C. H. Wang, J. G. Wang, M. Z. Wang, M. Watanabe, Y. Watanabe, E. Won, B. D. Yabsley, Y. Yamada, A. Yamaguchi, H. Yamamoto, Y. Yamashita, M. Yamauchi, H. Yanai, H. Yang, C. C. Zhang, J. Zhang, Z. P. Zhang, Y. Zheng, D. Žontar, D. Zürcher

Research output: Contribution to journalArticle

Abstract

We report an improved measurement of the partial-rate CP asymmetry in B±→K(-)0π± decays. The analysis is based on a data sample of 85×106 BB̄ pairs collected at the Γ(4S) resonance with the Belle detector at the KEKB e+e- storage ring. We measure A CP((K(-)0π± = 0.07 -0.08 -0.03+0.09 +0.01, where the first and second errors are statistical and systematic, respectively; the corresponding 90% confidence-level interval is -0.10 <ACP(K(-) 0π±)<0.22.

Original languageEnglish
Article number011103
Pages (from-to)111031-111036
Number of pages6
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume68
Issue number1
Publication statusPublished - 2003 Jul 1

All Science Journal Classification (ASJC) codes

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

Fingerprint Dive into the research topics of 'Improved measurement of the partial-rate CP asymmetry in B <sup>+</sup>→K<sup>0</sup>π<sup>+</sup> and B <sup>-</sup>→K̄<sup>0</sup>π<sup>-</sup> decays'. Together they form a unique fingerprint.

  • Cite this

    Unno, Y., Suzuki, K., Abe, K., Abe, T., Adachi, I., Aihara, H., Akatsu, M., Asano, Y., Aso, T., Aulchenko, V., Aushev, T., Bahinipati, S., Bakich, A. M., Ban, Y., Banerjee, S., Bay, A., Bedny, I., Behera, P. K., Bizjak, I., ... Zürcher, D. (2003). Improved measurement of the partial-rate CP asymmetry in B +→K0π+ and B -→K̄0π- decays. Physical Review D - Particles, Fields, Gravitation and Cosmology, 68(1), 111031-111036. [011103].