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ISSN - 15507998, Physical Review D - Particles, Fields, Gravitation and Cosmology, 2009, vol. 80, p. -

Measurement of D+→KS0K+ and Ds+→KS0π+ branching ratios

Won E., Ko B. R., Aihara H., Arinstein K., Aulchenko V., Aushev T., Bakich A. M., Balagura V., Barberio E., Bay A., Belous K., Bhardwaj V., Bischofberger M., Bondar A., Bozek A., Bračko M., Browder T. E., Chang P., Chen A., Chen P., Cheon B. G., Chiang C. C., Cho I. S., Choi Y., Dalseno J., Das A., Eidelman S., Epifanov D., Esen S., Gabyshev N., Garmash A., Golob B., Ha H., Haba J., Han B. Y., Hasegawa Y., Hayasaka K., Hayashii H., Hoshi Y., Hou W. S., Hsiung Y. B., Hyun H. J., Iijima T., Inami K., Itoh R., Iwasaki M., Iwasaki Y., Joshi N. J., Julius T., Kang J. H., Katayama N., Kawasaki T., Kiesling C., Kim H. J., Kim H. O., Kim J. H., Kim S. K., Kim Y. I., Kim Y. J., Korpar S., Krokovny P., Kumita T., Kuzmin A., 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., Mandl F., McOnie S., Miyata H., Miyazaki Y., Mori T., Nakano E., Nakao M., Nakazawa H., Natkaniec Z., Nishida S., Nitoh O., Ohshima T., Okuno S., Pakhlov P.

We report an improved measurement of D+→KS0K+ and Ds+→KS0π+ branching ratios using 605fb-1 of data collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. The measured branching ratios with respect to the Cabibbo-favored modes are B(D+→KS0K+)/B(D+→KS0π+)=0. 1899±0.0011±0.0022 and B(Ds+→KS0π+)/B(Ds+→KS0K+)=0. 0803±0.0024±0.0019 where the first uncertainties are statistical and the second are systematic. © 2009 The American Physical Society.