Search for CP violation in the decays D0→KS0P0

B. R. Ko, E. Won, K. Arinstein, T. Aushev, A. M. Bakich, V. Balagura, E. Barberio, K. Belous, V. Bhardwaj, B. Bhuyan, M. Bischofberger, A. Bondar, A. Bozek, M. Bračko, J. Brodzicka, T. E. Browder, A. Chen, P. Chen, B. G. Cheon, C. C. ChiangI. S. Cho, K. Cho, K. S. Choi, S. K. Choi, Y. Choi, S. Eidelman, D. Epifanov, M. Feindt, N. Gabyshev, A. Garmash, B. Golob, H. Ha, J. Haba, H. Hayashii, Y. Horii, Y. Hoshi, W. S. Hou, H. J. Hyun, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, M. Iwabuchi, T. Iwashita, T. Julius, J. H. Kang, T. Kawasaki, C. Kiesling, H. O. Kim, M. J. Kim, Y. J. Kim, K. Kinoshita, P. Kodẙ, S. Korpar, P. Krïan, R. Kumar, A. Kuzmin, Y. J. Kwon, S. H. Kyeong, M. J. Lee, S. H. Lee, C. Liu, D. Liventsev, R. Louvot, A. Matyja, K. Miyabayashi, H. Miyata, Y. Miyazaki, R. Mizuk, G. B. Mohanty, T. Mori, E. Nakano, M. Nakao, S. Nishida, K. Nishimura, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, P. Pakhlov, C. W. Park, H. Park, H. K. Park, R. Pestotnik, M. Petrič, L. E. Piilonen, A. Poluektov, M. Röhrken, Y. Sakai, O. Schneider, C. Schwanda, A. J. Schwartz, K. Senyo, M. E. Sevior, M. Shapkin, V. Shebalin, C. P. Shen, J. G. Shiu, B. Shwartz, F. Simon, J. B. Singh, P. Smerkol, Y. S. Sohn, E. Solovieva, S. Stanič, M. Starič, M. Sumihama, K. Sumisawa, T. Sumiyoshi, S. Tanaka, Y. Teramoto, K. Trabelsi, M. Uchida, S. Uehara, T. Uglov, Y. Unno, Y. Usov, G. Varner, K. E. Varvell, A. Vinokurova, C. H. Wang, M. Z. Wang, Y. Watanabe, Y. Yamashita, M. Yamauchi, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc, O. Zyukova

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Abstract

We have searched for CP violation in the decays D0→KS0P0 where P0 denotes a neutral pseudoscalar meson that is either a π0, η, or η using KEKB asymmetric-energy e+e- collision data corresponding to an integrated luminosity of 791fb-1 collected with the Belle detector. No evidence of significant CP violation is observed. We report the most precise CP asymmetry measurement in the decay D0→KS0π0 to date: ACPD0→KS0π0=(-0.28±0.19±0.10)%. We also report the first measurements of CP asymmetries in the decays D0→KS0η and D0→KS0η: ACPD0→KS0η= (+0.54±0.51±0.16)% and ACPD0→KS0η=(+0. 98±0.67±0.14)%, respectively.

Original languageEnglish
Article number211801
JournalPhysical review letters
Volume106
Issue number21
DOIs
Publication statusPublished - 2011 May 23

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Ko, B. R., Won, E., Arinstein, K., Aushev, T., Bakich, A. M., Balagura, V., Barberio, E., Belous, K., Bhardwaj, V., Bhuyan, B., Bischofberger, M., Bondar, A., Bozek, A., Bračko, M., Brodzicka, J., Browder, T. E., Chen, A., Chen, P., Cheon, B. G., ... Zyukova, O. (2011). Search for CP violation in the decays D0→KS0P0. Physical review letters, 106(21), [211801]. https://doi.org/10.1103/PhysRevLett.106.211801