Measurement of the quark mixing parameter cos21 using time-dependent dalitz analysis of B̄0→D[KS0π+π-]h0

P. Krokovny, K. Abe, K. Abe, I. Adachi, H. Aihara, D. Anipko, K. Arinstein, Y. Asano, V. Aulchenko, T. Aushev, S. Bahinipati, A. M. Bakich, V. Balagura, E. Barberio, A. Bay, U. Bitenc, I. Bizjak, A. Bondar, A. Bozek, M. BračkoT. E. Browder, Y. Chao, A. Chen, W. T. Chen, Y. Choi, A. Chuvikov, S. Cole, J. Dalseno, M. Danilov, M. Dash, S. Eidelman, D. Epifanov, S. Fratina, N. Gabyshev, A. Garmash, T. Gershon, A. Go, A. Gorišek, H. Ha, K. Hayasaka, H. Hayashii, M. Hazumi, D. Heffernan, T. Higuchi, L. Hinz, T. Hokuue, Y. Hoshi, S. Hou, W. S. Hou, Y. B. Hsiung, T. Iijima, K. Ikado, A. Imoto, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, J. H. Kang, N. Katayama, H. Kawai, T. Kawasaki, H. Kichimi, H. J. Kim, S. M. Kim, K. Kinoshita, S. Korpar, P. Križan, R. Kulasiri, R. Kumar, C. C. Kuo, A. Kuzmin, Y. J. Kwon, J. Lee, T. Lesiak, J. Li, S. W. Lin, G. Majumder, T. Matsumoto, S. McOnie, W. Mitaroff, K. Miyabayashi, Y. Miyazaki, T. Mori, I. Nakamura, M. Nakao, S. Nishida, T. Nozaki, S. Ogawa, T. Ohshima, T. Okabe, S. Okuno, H. Ozaki, P. Pakhlov, C. W. Park, H. Park, L. S. Peak, R. Pestotnik, L. E. Piilonen, A. Poluektov, M. Rozanska, Y. Sakai, T. R. Sarangi, N. Sato, N. Satoyama, T. Schietinger, O. Schneider, K. Senyo, H. Shibuya, B. Shwartz, J. B. Singh, A. Sokolov, A. Somov, N. Soni, R. Stamen, M. Starič, H. Stoeck, K. Sumisawa, O. Tajima, F. Takasaki, K. Tamai, M. Tanaka, Y. Teramoto, X. C. Tian, K. Trabelsi, T. Tsuboyama, T. Tsukamoto, S. Uehara, K. Ueno, S. Uno, P. Urquijo, Y. Ushiroda, G. Varner, K. E. Varvell, S. Villa, C. C. Wang, C. H. Wang, Y. Watanabe, E. Won, B. D. Yabsley, A. Yamaguchi, Y. Yamashita, M. Yamauchi, J. Ying, L. M. Zhang, Z. P. Zhang, V. Zhilich

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Abstract

We present a measurement of the angle 1 of the Cabibbo-Kobayashi-Maskawa unitarity triangle using a time-dependent Dalitz analysis of D→KS0π+π- decays produced in neutral B meson decay to a neutral D meson and a light meson (B̄0→D(*)h0). The method allows a direct extraction of 21 and, therefore, helps to resolve the ambiguity between 21 and π-21 in the measurement of sin21. We obtain sin21=0.78±0.44±0. 22 and cos21=1.87-0.53-0.32+0.40+0.22. The sign of cos21 is determined to be positive at 98.3% C.L.

Original languageEnglish
Article number081801
JournalPhysical Review Letters
Volume97
Issue number8
DOIs
Publication statusPublished - 2006
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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