Study of B 0 → ρ±π∓ time-dependent CP violation at Belle

C. C. Wang, K. Abe, K. Abe, T. Abe, I. Adachi, H. Aihara, Y. Asano, T. Aushev, A. M. Bakich, Y. Ban, A. Bay, I. Bedny, U. Bitenc, I. Bizjak, S. Blyth, A. Bondar, A. Bozek, M. Bračko, T. E. Browder, P. ChangY. Chao, K. F. Chen, W. T. Chen, B. C. Cheon, S. K. Choi, Y. Choi, A. Chuvikov, S. Cole, M. Dash, L. Y. Dong, J. Dragic, A. Drutskoy, S. Eidelman, V. Eiges, T. Gershon, G. Gokhroo, R. Guo, J. Haba, N. C. Hastings, K. Hayasaka, H. Hayashii, M. Hazumi, T. Hokuue, Y. Hoshi, S. Hou, W. S. Hou, Y. B. Hsiung, T. Iijima, A. Imoto, K. Inami, A. Ishikawa, H. Ishino, K. Itoh, R. Itoh, H. Iwasaki, Y. Iwasaki, H. Kakuno, J. H. Kang, J. S. Kang, P. Kapusta, N. Katayama, T. Kawasaki, H. R. Khan, H. Kichimi, H. J. Kim, K. Kinoshita, P. Križan, P. Krokovny, S. Kumar, Y. J. Kwon, J. S. Lange, S. E. Lee, Y. J. Lee, T. Lesiak, J. Li, A. Limosani, S. W. Lin, J. MacNaughton, T. Matsumoto, A. Matyja, Y. Mikami, W. Mitaroff, H. Miyata, R. Mizuk, D. Mohapatra, T. Mori, Y. Nagasaka, T. Nakadaira, E. Nakano, M. Nakao, Z. Natkaniec, S. Nishida, O. Nitoh, T. Nozaki, S. Ogawa, T. Ohshima, T. Okabe, S. Okuno, S. L. Olsen

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Abstract

We present a time-dependent analysis of CP violation in B 0→ rho;±π∓ decays based on a 140 fb -1 data sample collected at the υ(4S) resonance with the Belle detector at KEKB. We obtain the charge asymmetry A CP ρπ = -0.16 ±0.10(stat) ±0.02(syst). An unbinned maximum-likelihood fit to the Δt distributions yields C ρπ = 0.25 ± 0.17(stat) -0.02 +0.02(syst), ΔC ρπ = 0.38 ±0.18(stat) -0.04 +0.02(syst), S ρπ = -0.28 ±0.23(stat) -0.08 +0.10(syst), and ΔS ρπ = -0.30 ±0.24(stat) ±0.09(syst). The direct CP violation parameters for B→ρ +π -B→ρ -π + decays are A ρπ +- = -0.02 ±0.16(stat) -0.02 +0.5(syst) and A ρπ -+ = -0.53 ±0.29(stat) -0.04 +0.9(syst).

Original languageEnglish
Article number121801
JournalPhysical Review Letters
Volume94
Issue number12
DOIs
Publication statusPublished - Apr 1 2005
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Wang, C. C., Abe, K., Abe, K., Abe, T., Adachi, I., Aihara, H., Asano, Y., Aushev, T., Bakich, A. M., Ban, Y., Bay, A., Bedny, I., Bitenc, U., Bizjak, I., Blyth, S., Bondar, A., Bozek, A., Bračko, M., Browder, T. E., ... Olsen, S. L. (2005). Study of B 0 → ρ±π∓ time-dependent CP violation at Belle. Physical Review Letters, 94(12), [121801]. https://doi.org/10.1103/PhysRevLett.94.121801