Вы находитесь на старом сайте НГУ. Перейти на новый сайт

ISSN - 15507998, Physical Review D - Particles, Fields, Gravitation and Cosmology, 2004, vol. 70, p. 012001-1

Measurement of the branching fractions for B → ωK and B → ωπ

Wang C. H., Abe K., Abe K., Abe N., Abe T., Adachi I., Aihara H., Akatsu M., Aso T., Aulchenko V., Aushev T., Bahinipati S., Bakich A. M., Ban Y., Banerjee S., Blyth S., Bondar A., Bozek A., Bračko M., Browder T. E., Chao Y., Chen K. F., Cheon B. G., Chistov R., Choi S. K., Choi Y., Chuvikov A., Cole S., Danilov M., Dong L. Y., Eidelman S., Eiges V., Gershon T., Golob B., Haba J., Hastings N. C., Hayashii H., Hazumi M., Hinz L., Hokuue T., Hoshi Y., Hou W. S., Hsiung Y. B., Huang H. C., Iijima T., Inami K., Ishikawa A., Itoh R., Iwasaki H., Iwasaki M., Kang J. H., Kang J. S., Kapusta P., Katayama N., Kawai H., Kawasaki T., Kichimi H., Kim H. J., Kim J. H., Kim S. K., Koppenburg P., Korpar S., Križan P., Krokovny P., Kwon Y. J., Leder G., Lee S. H., Lesiak T., Li J., Limosani A., Lin S. W., Liventsev D., MacNaughton J., Majumder G., Mandl F., Matsumoto T., Mitaroff W., Miyabayashi K., Miyata H., Mohapatra D., Moloney G. R., Mori T., Nagamine T., Nagasaka Y., Nakano E., Nakao M., Natkaniec Z., Nishida S., Nitoh O., Ogawa S., Ohshima T., Okabe T., Okuno S., Olsen S. L., Ostrowicz W.

We report improved measurements of branching fractions for charmless hadronic two-body B meson decays containing an ω meson in the final state. The results are based on a data sample of 78 fb -1 collected on the Y(4S) resonance by the Belle detector. We measure the branching fractions B(B + → ωK +)=(6.5 -1.2 +1.3±0.6) × 10 -6 and B(B +→ωπ +=(5.7 -1.3 +1.4±0.6)×10 -6. We give 90% confidence upper limits for B(B 0→ωK 0) ≤7.6×10 -6 and B(B 0→ωπ 0)<1. 9×10 -6. We also obtain the partial rate asymmetries A CP=0.06 -0.18 +0.21 ±0.01 for B ±→ωK ± and A CP=0. 50 -0.20 +0.23±0.02 for B ±→ωπ ±.