Time-dependent C P violation effects in partially reconstructed B 0 → D*π± decays

T. Gershon, K. Abe, K. Abe, I. Adachi, H. Aihara, Y. Asano, T. Aushev, S. Bahinipati, A. M. Bakich, S. Banerjee, A. Bay, I. Bedny, U. Bitenc, I. Bizjak, S. Blyth, A. Bondar, A. Bozek, M. Bračko, J. Brodzicka, T. E. BrowderM. C. Chang, P. Chang, Y. Chao, A. Chen, W. T. Chen, B. G. Cheon, S. K. Choi, Y. Choi, A. Chuvikov, S. Cole, J. Dalseno, M. Danilov, M. Dash, J. Dragic, S. Eidelman, S. Fratina, N. Gabyshev, A. Garmash, G. Gokhroo, B. Golob, A. Gorišek, J. Haba, K. Hara, N. C. Hastings, K. Hayasaka, H. Hayashii, M. Hazumi, L. Hinz, T. Hokuue, Y. Hoshi, S. Hou, W. S. Hou, T. Iijima, A. Imoto, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, J. H. Kang, J. S. Kang, P. Kapusta, N. Katayama, H. Kawai, T. Kawasaki, N. Kent, H. R. Khan, H. Kichimi, H. J. Kim, S. M. Kim, K. Kinoshita, P. Krokovny, S. Kumar, C. C. Kuo, A. Kuzmin, Y. J. Kwon, G. Leder, T. Lesiak, J. Li, A. Limosani, S. W. Lin, D. Liventsev, J. MacNaughton, G. Majumder, F. Mandl, D. Marlow, T. Matsumoto, Y. Mikami, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, D. Mohapatra, G. R. Moloney, T. Nagamine, E. Nakano, M. Nakao, H. Nakazawa, S. Nishida, O. Nitoh, T. Nozaki, S. Ogawa, T. Ohshima, T. Okabe, S. Okuno, S. L. Olsen, W. Ostrowicz, P. Pakhlov, H. Palka, C. W. Park, N. Parslow, L. S. Peak, R. Pestotnik, L. E. Piilonen, A. Poluektov, F. J. Ronga, H. Sagawa, Y. Sakai, T. R. Sarangi, N. Sato, T. Schietinger, O. Schneider, C. Schwanda, A. J. Schwartz, K. Senyo, M. E. Sevior, T. Shibata, H. Shibuya, J. B. Singh, A. Somov, R. Stamen, S. Stanič, M. Starič, K. Sumisawa, T. Sumiyoshi, S. Suzuki, O. Tajima, F. Takasaki, K. Tamai, N. Tamura, M. Tanaka, Y. Teramoto, X. C. Tian, K. Trabelsi, T. Tsuboyama, T. Tsukamoto, S. Uehara, T. Uglov, S. Uno, P. Urquijo, Y. Ushiroda, G. Varner, K. E. Varvell, S. Villa, C. C. Wang, C. H. Wang, M. Watanabe, Q. L. Xie, B. D. Yabsley, A. Yamaguchi, H. Yamamoto, Y. Yamashita, M. Yamauchi, Heyoung Yang, J. Ying, J. Zhang, L. M. Zhang, Z. P. Zhang, D. Žontar

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Abstract

We report measurements of time-dependent decay rates for B0 → D*π± decays and extraction of C P violation parameters related to φ3. We use a partial reconstruction technique, whereby signal events are identified using information only from the primary pion and the charged pion from the decay of the D*. The analysis uses 140 fb-1 of data accumulated at the γ (4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We measure the C P violation parameters S+ = 0.035 ± 0.041 (stat) ± 0.018 (syst) and S- = 0.025 ± 0.041 (stat) ± 0.018 (syst).

Original languageEnglish
Pages (from-to)11-21
Number of pages11
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume624
Issue number1-2
DOIs
StatePublished - 22 Sep 2005

Keywords

  • B meson
  • C P violation
  • CKM matrix elements

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