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ISSN - 00319007, EISSN - 10797114, Physical Review Letters, 2010, vol. 104, p. -

Search for CP violation in the decays D(s)+→KS0π+ and D(s)+→KS0K+

Ko B. R., Won E., Aihara H., Aulchenko V., Aushev T., Bakich A. M., Balagura V., Barberio E., Belous K., Bhardwaj V., Bischofberger M., Bozek A., Bračko M., Browder T. E., Chang P., Chen A., Chen P., Cheon B. G., Cho I. S., Choi Y., Dalseno J., Das A., Doležal Z., Drutskoy A., Eidelman S., Goldenzweig P., Golob B., Ha H., Hara T., Hayashii H., Horii Y., Hoshi Y., Hou W. S., Hsiung Y. B., Hyun H. J., Iijima T., Inami K., Itoh R., Iwabuchi M., Iwasaki M., Joshi N. J., Kah D. H., Kang J. H., Kapusta P., Katayama N., Kawasaki T., Kim H. O., Kim Y. J., Korpar S., Križan P., Krokovny P., Kuhr T., Kumita T., Kwon Y. J., Kyeong S. H., Lange J. S., Lee M. J., Lee S. H., Li J., Liu C., Liu Y., Liventsev D., Louvot R., Matyja A., McOnie S., Miyata H., Mizuk R., Nakano E., Nakao M., Natkaniec Z., Neubauer S., Nishida S., Nitoh O., Ogawa S., Ohshima T., Okuno S., Olsen S. L., Ostrowicz W., Pakhlov P., Pakhlova G., Palka H., Park C. W., Park H., Park H. K., Pestotnik R., Petrič M., Piilonen L. E., Röhrken M., Ryu S., Sahoo H., Sakai Y.

We have searched for CP violation in the charmed meson decays D(s)+→KS0π+ and D(s)+→KS0K+ using 673fb -1 of data collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. No evidence for CP violation is observed. We report the most sensitive CP asymmetry measurements to date for these decays: ACPD+→KS0π+=(-0. 71±0.19±0.20)%, ACPDs+→KS0π+=(+5.45±2. 50±0.33)%, ACPD+→KS0K+=(-0.16±0. 58±0.25)%, and ACPDs+→KS0K+=(+0.12±0.36±0. 22)%, where the first uncertainties are statistical and the second are systematic. © 2010 The American Physical Society.