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ISSN - 10298479, Journal of High Energy Physics, 2013, vol. 2013, p. 1-12

Search for CP violation in the decay D+ → K S 0K+

Ko B. R., Won E., Adachi I., Aihara H., Arinstein K., Asner D. M., Aushev T., Bakich A. M., Belous K., Bhardwaj V., Bhuyan B., Bondar A., Bonvicini G., Bozek A., Bračko M., Browder T. E., Chekelian V., Chen A., Chen P., Cheon B. G., Chilikin K., Chistov R., Cho K., Choi S. K., Choi Y., Cinabro D., Dalseno J., Doležal Z., Dutta D., Eidelman S., Esen S., Farhat H., Fast J. E., Gaur V., Gabyshev N., Ganguly S., Gillard R., Goh Y. M., Golob B., Hayasaka K., Hayashii H., Hoshi Y., Hou W. S., Hyun H. J., Iijima T., Ishikawa A., Iwasaki Y., Julius T., Kang J. H., Kato E., Kiesling C., Kim H. O., Kim J. B., Kim K. T., Kim M. J., Kim Y. J., Kinoshita K., Klucar J., Korpar S., Kouzes R. T., Križan P., Krokovny P., Kuhr T., Kumita T., Kuzmin A., Kwon Y. J., Li Y., Liu C., Liventsev D., Louvot R., Miyabayashi K., Miyata H., Mizuk R., Mohanty G. B., Moll A., Muramatsu N., Nagasaka Y., Nakano E., Nakao M., Nedelkovska E., Ng C., Nellikunnummel N., Nishida S., Nishimura K., Nitoh O., Ogawa S., Ohshima T., Okuno S., Oswald C., Pakhlov P., Pakhlova G.

We search for CP violation in the decay D+ → K S 0K+ using a data sample with an integrated luminosity of 977 fb-1 collected with the Belle detector at the KEKB e+ e- asymmetric-energy collider. No CP violation has been observed and the CP asymmetry in D+ → KS 0K+ decay is measured to be (-0.25±0.28±0. 14)%, which is the most sensitive measurement to date. After subtracting CP violation due to K0-K̄0 mixing, the CP asymmetry in D+ → K̄0K+ decay is found to be (+0.08±0.28±0.14)%. © 2013 SISSA.