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

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Starič, M., Aihara, H., Arinstein, K., Asner, D. M., Aushev, T., Bakich, A. M., Bay, A., Bhardwaj, V., Bhuyan, B., Bozek, A., Bračko, M., Browder, T. E., Chen, A., Chen, P., Cheon, B. G., Chilikin, K., Chistov, R., Cho, I. S., Cho, K., ... Zupanc, A. (2012). Search for CP violation in D ± meson decays to π ± Physical Review Letters, 108(7), [071801]. https://doi.org/10.1103/PhysRevLett.108.071801