Search for CP violation in D ± meson decays to π ±

M. Starič, H. Aihara, K. Arinstein, D. M. Asner, T. Aushev, A. M. Bakich, A. Bay, V. Bhardwaj, B. Bhuyan, A. Bozek, M. Bračko, T. E. Browder, A. Chen, P. Chen, B. G. Cheon, K. Chilikin, R. Chistov, I. S. Cho, K. Cho, Y. ChoiZ. Doležal, Z. Drásal, S. Eidelman, J. E. Fast, V. Gaur, N. Gabyshev, B. Golob, J. Haba, K. Hayasaka, Y. Horii, Y. Hoshi, W. S. Hou, Y. B. Hsiung, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, M. Iwabuchi, Y. Iwasaki, T. Iwashita, T. Julius, J. H. Kang, T. Kawasaki, C. Kiesling, H. J. Kim, H. O. Kim, J. B. Kim, K. T. Kim, M. J. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, N. Kobayashi, S. Koblitz, P. Kodyš, S. Korpar, P. Križan, T. Kumita, Y. J. Kwon, J. S. Lange, S. H. Lee, J. Li, Y. Li, J. Libby, C. Liu, Z. Q. Liu, R. Louvot, S. McOnie, K. Miyabayashi, H. Miyata, Y. Miyazaki, G. B. Mohanty, E. Nakano, Z. Natkaniec, S. Nishida, O. Nitoh, T. Nozaki, T. Ohshima, S. Okuno, S. L. Olsen, G. Pakhlova, H. K. Park, K. S. Park, R. Pestotnik, M. Petrič, L. E. Piilonen, M. Röhrken, S. Ryu, H. Sahoo, K. Sakai, Y. Sakai, T. Sanuki, O. Schneider, C. Schwanda, A. J. Schwartz, O. Seon, M. E. Sevior, V. Shebalin, C. P. Shen, T. A. Shibata, J. G. Shiu, B. Shwartz, F. Simon, P. Smerkol, Y. S. Sohn, A. Sokolov, S. Stanič, M. Sumihama, K. Sumisawa, G. Tatishvili, Y. Teramoto, K. Trabelsi, M. Uchida, S. Uehara, T. Uglov, Y. Unno, S. Uno, P. Urquijo, G. Varner, A. Vossen, C. H. Wang, M. Z. Wang, M. Watanabe, Y. Watanabe, K. M. Williams, E. Won, B. D. Yabsley, Y. Yamashita, C. Z. Yuan, C. C. Zhang, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

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Abstract

We search for CP violation in Cabibbo-suppressed charged D meson decays by measuring the difference between the CP-violating asymmetries for the Cabibbo-suppressed decays D ±→K +K -π ± and the Cabibbo-favored decays Ds±→K +K -π ± in the K +K - mass region of the resonance. Using 955fb -1 of data collected with the Belle detector, we obtain ACPD +→π +=(+0.51±0.28±0.05)%. The measurement improves the sensitivity of previous searches by more than a factor of 5. We find no evidence for direct CP violation.

Original languageEnglish
Article number071801
JournalPhysical review letters
Volume108
Issue number7
DOIs
Publication statusPublished - 2012 Feb 13

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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