Evidence for large direct CP violation in B±→ρ(770) 0K± from analysis of three-body charmless B±→K±π ±π± decays

A. Garmash, K. Abe, K. Abe, I. Adachi, H. Aihara, Y. Asano, T. Aushev, T. Aziz, S. Bahinipati, A. M. Bakich, M. Barbero, I. Bedny, U. Bitenc, I. Bizjak, A. Bondar, A. Bozek, M. Bračko, J. Brodzicka, T. E. Browder, P. ChangY. Chao, A. Chen, K. F. Chen, W. T. Chen, B. G. Cheon, R. Chistov, Y. Choi, Y. K. Choi, A. Chuvikov, J. Dalseno, M. Danilov, M. Dash, J. Dragic, A. Drutskoy, S. Eidelman, D. Epifanov, S. Fratina, N. Gabyshev, T. Gershon, A. Go, G. Gokhroo, B. Golob, A. Gorišek, H. C. Ha, T. Hara, Y. Hasegawa, 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, R. Itoh, M. Iwasaki, Y. Iwasaki, P. Kapusta, N. Katayama, H. Kawai, T. Kawasaki, H. R. Khan, H. Kichimi, S. K. Kim, S. M. Kim, K. Kinoshita, S. Korpar, P. Križan, P. Krokovny, R. Kulasiri, C. C. Kuo, A. Kuzmin, Y. J. Kwon, S. E. Lee, T. Lesiak, A. Limosani, S. W. Lin, D. Liventsev, F. Mandl, D. Marlow, T. Matsumoto, A. Matyja, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, Y. Miyazaki, T. Nagamine, E. Nakano, M. Nakao, Z. Natkaniec, S. Nishida, O. Nitoh, S. Noguchi, T. Ohshima, T. Okabe, S. Okuno, S. L. Olsen, H. Ozaki, C. W. Park, H. Park, K. S. Park, L. S. Peak, R. Pestotnik, L. E. Piilonen, M. Rozanska, Y. Sakai, N. Satoyama, T. Schietinger, O. Schneider, J. Schümann, C. Schwanda, A. J. Schwartz, R. Seidl, M. E. Sevior, H. Shibuya, B. Shwartz, J. B. Singh, A. Somov, R. Stamen, S. Stanič, M. Starič, T. Sumiyoshi, S. Suzuki, S. Y. Suzuki, F. Takasaki, K. Tamai, N. Tamura, M. Tanaka, G. N. Taylor, Y. Teramoto, X. C. Tian, K. Trabelsi, T. Tsuboyama, T. Tsukamoto, S. Uehara, T. Uglov, S. Uno, P. Urquijo, G. Varner, K. E. Varvell, S. Villa, C. H. Wang, M. Z. Wang, Y. Watanabe, E. Won, Q. L. Xie, A. Yamaguchi, M. Yamauchi, H. Yang, L. M. Zhang, Z. P. Zhang, V. Zhilich, D. Zürcher

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Abstract

We report results on a Dalitz analysis of three-body charmless B±→K±π±π decay including searches for direct CP violation. We report the first observation of the decay B±→f2(1270) K± with a statistical significance above 6σ. We also observe first evidence for large direct CP violation in the B±→ρ(770) 0K± channel. The results are obtained with a data sample that contains 386×106 BB̄ pairs collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider.

Original languageEnglish
Article number251803
JournalPhysical review letters
Volume96
Issue number25
DOIs
Publication statusPublished - 2006

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Garmash, A., Abe, K., Abe, K., Adachi, I., Aihara, H., Asano, Y., Aushev, T., Aziz, T., Bahinipati, S., Bakich, A. M., Barbero, M., Bedny, I., Bitenc, U., Bizjak, I., Bondar, A., Bozek, A., Bračko, M., Brodzicka, J., Browder, T. E., ... Zürcher, D. (2006). Evidence for large direct CP violation in B±→ρ(770) 0K± from analysis of three-body charmless B±→K±π ±π± decays. Physical review letters, 96(25), [251803]. https://doi.org/10.1103/PhysRevLett.96.251803