Search for CP violation in D± meson decays to ϕπ±.

/ Authors

M. Starič, H. Aihara, K. Arinstein, D. Asner, T. Aushev, A. Bakich, A. Bay, V. Bhardwaj, B. Bhuyan, A. Bozek

and 124 more authors

M. Bračko, T. Browder, A. Chen, P. Chen, B. Cheon, K. Chilikin, R. Chistov, I. Cho, K. Cho, Y. Choi, Z. Doležal, Z. Drasal, S. Eidelman, J. Fast, V. Gaur, N. Gabyshev, B. Golob, J. Haba, K. Hayasaka, Y. Horii, Y. Hoshi, W. Hou, Y. Hsiung, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, M. Iwabuchi, Y. Iwasaki, T. Iwashita, T. Julius, J. Kang, T. Kawasaki, C. Kiesling, H. Kim, H. Kim, J. Kim, K. Kim, M. Kim, Y. Kim, K. Kinoshita, B. Ko, N. Kobayashi, S. Koblitz, P. Kodys, S. Korpar, P. Križan, T. Kumita, Y. Kwon, J. Lange, S. Lee, J. Li, Y. Li, J. Libby, C. Liu, Z. Liu, R. Louvot, S. Mconie, K. Miyabayashi, H. Miyata, Y. Miyazaki, G. Mohanty, E. Nakano, Z. Natkaniec, S. Nishida, O. Nitoh, T. Nozaki, T. Ohshima, S. Okuno, S. L. Olsen, G. Pakhlova, H. Park, K. Park, R. Pestotnik, M. Petrić, L. Piilonen, M. Röhrken, S. Ryu, H. Sahoo, K. Sakai, Y. Sakai, T. Sanuki, O. Schneider, C. Schwanda, A. Schwartz, O. Seon, M. Sevior, V. Shebalin, C. Shen, T. Shibata, J. Shiu, B. Shwartz, F. Simon, P. Smerkol, Y. 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. Wang, M. Wang, M. Watanabe, Y. Watanabe, K. M. Williams, E. Won, B. Yabsley, Y. Yamashita, C. Yuan, C. Zhang, Z. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

/ 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 D(s)(±)→K(+)K(-)π(±) in the K(+)K(-) mass region of the ϕ resonance. Using 955 fb(-1) of data collected with the Belle detector, we obtain A(CP)(D+→ϕπ+)=(+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.

Journal: Physical review letters

DOI: 10.1103/PhysRevLett.108.071801