Evidence for [Formula Presented]-violating asymmetries in [Formula Presented] decays and constraints on the CKM angle [Formula Presented]

K. Abe, K. Abe, N. Abe, T. Abe, I. Adachi, H. Aihara, K. Akai, M. Akatsu, M. Akemoto, Y. Asano, T. Aushev, A. M. Bakich, Y. Ban, E. Banas, A. Bay, I. Bedny, P. K. Behera, I. Bizjak, A. Bondar, A. BozekM. Bračko, J. Brodzicka, T. E. Browder, B. C.K. Casey, P. Chang, K. Chen, B. G. Cheon, R. Chistov, S. Choi, Y. Choi, Y. K. Choi, M. Danilov, J. Dragic, A. Drutskoy, S. Eidelman, V. Eiges, C. W. Everton, J. Flanagan, C. Fukunaga, K. Furukawa, N. Gabyshev, A. Garmash, T. Gershon, B. Golob, R. Guo, C. Hagner, K. Hara, N. C. Hastings, K. Hasuko, H. Hayashii, M. Hazumi, T. Higuchi, L. Hinz, T. Hojo, T. Hokuue, Y. Hoshi, W. Hou, Y. B. Hsiung, H. Huang, T. Igaki, Y. Igarashi, T. Iijima, H. Ikeda, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, H. Iwasaki, Y. Iwasaki, H. K. Jang, J. S. Kang, P. Kapusta, S. U. Kataoka, N. Katayama, G. Katano, H. Kawai, N. Kawamura, T. Kawasaki, H. Kichimi, M. Kikuchi, E. Kikutani, D. W. Kim, H. J. Kim, H. O. Kim, Hyunwoo Kim, J. H. Kim, S. K. Kim, S. Kobayashi, S. Korpar, P. Križan, P. Krokovny, T. Kubo, R. Kulasiri, S. Kumar, A. Kuzmin, Y. Kwon, J. S. Lange, G. Leder, S. H. Lee, J. Li, S. Lin, J. MacNaughton, F. Mandl, D. Marlow, S. Matsumoto, T. Matsumoto, S. Michizono, T. Mimashi, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, G. R. Moloney, T. Mori, A. Murakami, Y. Nagasaka, T. Nakadaira, T. T. Nakamura, E. Nakano, M. Nakao, H. Nakayama, J. W. Nam, K. Neichi, S. Nishida, O. Nitoh, S. Noguchi, T. Nozaki, S. Ogawa, Y. Ogawa, K. Ohmi, Y. Ohnishi, T. Ohshima, N. Ohuchi, T. Okabe, S. Okuno, S. L. Olsen, Y. Onuki, W. Ostrowicz, H. Ozaki, H. Palka, C. W. Park, H. Park, K. S. Park, L. S. Peak, J. Perroud, M. Peters, L. E. Piilonen, M. Rozanska, K. Rybicki, H. Sagawa, S. Saitoh, Y. Sakai, T. R. Sarangi, M. Satapathy, A. Satpathy, O. Schneider, S. Schrenk, J. Schümann, C. Schwanda, S. Semenov, K. Senyo, M. E. Sevior, H. Shibuya, T. Shidara, B. Shwartz, V. Sidorov, J. B. Singh, S. Stanič, M. Starič, R. Sugahara, A. Sugiyama, K. Sumisawa, T. Sumiyoshi, K. Suzuki, S. Suzuki, T. Takahashi, F. Takasaki, K. Tamai, N. Tamura, J. Tanaka, M. Tanaka, M. Tawada, G. N. Taylor, Y. Teramoto, S. Tokuda, T. Tomura, K. Trabelsi, T. Tsuboyama, T. Tsukamoto, S. Uehara, Y. Unno, S. Uno, N. Uozaki, S. E. Vahsen, G. Varner, K. E. Varvell, C. C. Wang, C. H. Wang, J. G. Wang, M. Wang, Y. Watanabe, Eunil Won, B. D. Yabsley, Y. Yamada, A. Yamaguchi, H. Yamamoto, Y. Yamashita, Y. Yamashita, M. Yamauchi, M. Yokoyama, M. Yoshida, C. C. Zhang, Z. P. Zhang, V. Zhilich, D. Žontar

Research output: Contribution to journalArticle

Abstract

We present an improved measurement of [Formula Presented]-violating asymmetries in [Formula Presented] decays based on a [Formula Presented] data sample collected at the [Formula Presented] resonance with the Belle detector at the KEKB asymmetric-energy [Formula Presented] collider. We reconstruct one neutral B meson as a [Formula Presented] [Formula Presented] eigenstate and identify the flavor of the accompanying B meson from inclusive properties of its decay products. We apply an unbinned maximum likelihood fit to the distribution of the time intervals between the two B meson decay points. The fit yields the [Formula Presented]-violating asymmetry amplitudes [Formula Presented] and [Formula Presented] where the statistical uncertainties are determined from the Monte Carlo pseudoexperiments. We obtain confidence intervals for [Formula Presented]-violating asymmetry parameters [Formula Presented] and [Formula Presented] based on a frequentist approach. We rule out the [Formula Presented]-conserving case, [Formula Presented] at the [Formula Presented] confidence level. We discuss how these results constrain the value of the Cabibbo-Kobayashi-Maskawa (CKM) angle [Formula Presented]

Original languageEnglish
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume68
Issue number1
DOIs
Publication statusPublished - 2003 Jan 1

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ASJC Scopus subject areas

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

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