Measurement of φ3 with Dalitz plot analysis of B ± → D(*)K± decay

A. Poluektov, K. Abe, T. Abe, H. Aihara, Y. Asano, T. Aushev, T. Aziz, S. Bahinipati, A. M. Bakich, I. Bedny, U. Bitenc, I. Bizjak, S. Blyth, A. Bondar, A. Bozek, M. Bračko, J. Brodzicka, T. E. Browder, P. Chang, Y. ChaoB. G. Cheon, R. Chistov, S. K. Choi, Y. Choi, A. Chuvikov, M. Danilov, M. Dash, L. Y. Dong, S. Eidelman, V. Eiges, Y. Enari, S. Fratina, N. Gabyshev, A. Garmash, T. Gershon, G. Gokhroo, B. Golob, R. Guo, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, M. Hazumi, T. Higuchi, L. Hinz, T. Hokuue, Y. Hoshi, W. S. Hou, Y. B. Hsiung, A. Imoto, K. Inami, A. Ishikawa, R. Itoh, H. Iwasaki, M. Iwasaki, J. H. Kang, J. S. Kang, S. U. Kataoka, N. Katayama, H. Kawai, T. Kawasaki, H. R. Khan, H. J. Kim, J. H. Kim, S. K. Kim, K. Kinoshita, P. Koppenburg, S. Korpar, P. Križan, P. Krokovny, A. Kuzmin, Youngjoon Kwon, S. H. Lee, T. Lesiak, J. Li, S. W. Lin, J. MacNaughton, F. Mandl, D. Marlow, T. Matsumoto, A. Matyja, W. Mitaroff, K. Miyabayashi, H. Miyata, R. Mizuk, T. Mori, T. Nagamine, Y. Nagasaka, T. Nakadaira, M. Nakao, H. Nakazawa, 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, N. Parslow, L. E. Piilonen, N. Root, M. Rozanska, H. Sagawa, S. Saitoh, Y. Sakai, T. R. Sarangi, N. Sato, O. Schneider, J. Schümann, C. Schwanda, A. J. Schwartz, S. Semenov, K. Senyo, R. Seuster, M. E. Sevior, H. Shibuya, B. Shwartz, V. Sidorov, A. Somov, N. Soni, R. Stamen, S. Stanič, M. Starič, A. Sugiyama, 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, S. Villa, C. H. Wang, M. Z. Wang, M. Watanabe, B. D. Yabsley, Y. Yamada, A. Yamaguchi, Y. Yamashita, M. Yamauchi, J. Ying, Y. Yusa, S. L. Zang, J. Zhang, Z. P. Zhang, V. Zhilich, D. Žontar, D. Zürcher

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Abstract

We present a measurement of the unitarity triangle angle φ3 using a Dalitz plot analysis of the three-body decay of the neutral D meson from the B± → D(*)K± process. The method employs the interference between D0 and D̄0 to extract both the weak and strong phases. We apply this method to a 140 fb-1 data sample collected by the Belle experiment. The analysis uses the modes B± → DK± and B± → D*K±, D* → Dπ0, where the neutral D meson decays into KSπ + π-. We obtain 146 signal candidates for B ± → DK± and 39 candidates for B ± → D*K±. From a combined maximum likelihood fit to the B± → DK± and B± → D*K± modes, we obtain φ3 = 77° -19°+17° (stat) ± 13°(syst) ± 11°(model). The corresponding 2 standard deviation interval is 26° < φ3 < 126°.

Original languageEnglish
Article number072003
Pages (from-to)072003-1-072003-14
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume70
Issue number7
DOIs
Publication statusPublished - 2004 Oct

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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    Poluektov, A., Abe, K., Abe, T., Aihara, H., Asano, Y., Aushev, T., Aziz, T., Bahinipati, S., Bakich, A. M., Bedny, I., Bitenc, U., Bizjak, I., Blyth, S., Bondar, A., Bozek, A., Bračko, M., Brodzicka, J., Browder, T. E., Chang, P., ... Zürcher, D. (2004). Measurement of φ3 with Dalitz plot analysis of B ± → D(*)K± decay. Physical Review D - Particles, Fields, Gravitation and Cosmology, 70(7), 072003-1-072003-14. [072003]. https://doi.org/10.1103/PhysRevD.70.072003