Вы находитесь на старом сайте НГУ. Перейти на новый сайт

ISSN - 15507998, Physical Review D - Particles, Fields, Gravitation and Cosmology, 2003, vol. 68, p. -

Improved measurement of the partial-rate CP asymmetry in B +→K 0π + and B -→K̄ 0π - decays

Unno Y., Suzuki K., Abe K., Abe K., Abe T., Adachi I., Aihara H., Akatsu M., Asano Y., Aso T., Aulchenko V., Aushev T., Bahinipati S., Bakich A. M., Ban Y., Banerjee S., Bay A., Bedny I., Behera P. K., Bizjak I., Bondar A., Bozek A., Bračko M., Brodzicka J., Browder T. E., Casey B. C K, Chang P., Chao Y., Chen K. F., Cheon B. G., Chistov R., Choi S. K., Choi Y., Choi Y. K., Danilov M., Dong L. Y., Dragic J., Drutskoy A., Eidelman S., Eiges V., Enari Y., Fang F., Gabyshev N., Garmash A., Gershon T., Golob B., Guo R., Haba J., Handa F., Hayashii H., Hazumi M., Hinz L., Hokuue T., Hoshi Y., Hou W. S., Huang H. C., Iijima T., Inami K., Ishikawa A., Itoh R., Iwasaki H., Iwasaki Y., Jang H. K., Kang J. H., Kang J. S., Kapusta P., Kataoka S. U., Katayama N., Kawai H., Kawai H., Kawamura N., Kawasaki T., Kichimi H., Kim D. W., Kim H. J., Kim Hyunwoo, Kim J. H., Kim S. K., Kinoshita K., Kobayashi S., Korpar S., Križan P., Krokovny P., Kulasiri R., Kumar S., Kuzmin A., Kwon Y. J., Lange J. S., Leder G., Lee S. H., Li J., Limosani A., Lin S. W., Liventsev D.

We report an improved measurement of the partial-rate CP asymmetry in B ±→K 0π ± decays. The analysis is based on a data sample of 85×10 6 BB̄ pairs collected at the Y(4S) resonance with the Belle detector at the KEKB e +e - storage ring. We measure A CP(K 0π ±) = 0.07- 0.08 +0.09 +0.03 +0.01, where the first and second errors are statistical and systematic, respectively; the corresponding 90% confidence-level interval is -0.10 <A CP(K 0π ±) <0.22. © 2003 The American Physical Society.