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ISSN - 15507998, Physical Review D - Particles, Fields, Gravitation and Cosmology, 2002, vol. 65, p. 920051-9200511

Study of three-body charmless B decays

Garmash A., Abe K., Abe K., Abe N., Abe T., Adachi I., Aihara H., Asano Y., Aso T., Aulchenko V., Aushev T., Bakich A. M., Ban Y., Banas E., Behari S., Behera P. K., Bondar A., Bozek A., Bračko M., Browder T. E., Casey B. C K, Chang P., Chao Y., Cheon B. G., Chistov R., Choi S. K., Choi Y., Dong L. Y., Drutskoy A., Eidelman S., Eiges V., Fang F., Fujii H., Fukunaga C., Fukushima M., Gabyshev N., Gershon T., Gordon A., Gotow K., Guo R., Haba J., Hamasaki H., Handa F., Hara K., Hara T., Hastings N. C., Hayashii H., Hazumi M., Heenan E. M., Higuchi I., Higuchi T., Hojo T., Hokuue T., Hoshi Y., Hoshina K., Hou S. R., Hou W. S., Huang H. C., Igarashi Y., Iijima T., Ikeda H., Inami K., Ishikawa A., Ishino H., Itoh R., Iwasaki H., Iwasaki Y., Jackson D. J., Jang H. K., Kang J. H., Kang J. S., Kapusta P., Katayama N., Kawai H., Kawai H., Kawamura N., Kawasaki T., Kichimi H., Kim D. W., Kim Heejong, Kim H. J., Kim H. O., Kim Hyunwoo, Kim S. K., Kim T. H., Kinoshita K., Konishi H., Korpar S., Križan P., Krokovny P., Kulasiri R., Kumar S., Kuzmin A., Kwon Y. J., Lange J. S., Leder G., Lee S. H.

We report on a study of three-body charmless decays B +→K +h +h - based on a 29.1 fb -1 data sample collected with the Belle detector. With no assumptions on the intermediate mechanisms, the following three-body branching fractions have been measured for the first time: β(B +→K +π -π +) =(55.6±5.8 ±7.7) × 10 -6 and β(B +→K +K -K +) =(35.3±3.7±4.5) × 10 -6. We present the first observation of the decay B +→f 0(980)K + with a branching fraction product of β(B +→f 0(980)K +) × β(f 0(980)→π +π -) =(9.6 +2.5+1.5+3.4 -2.3-1.5-0.8) × 10 -6. This is the first reported example of a B meson decay to a scalar pseudoscalar final state. We also report the first observation of B +→K*(892) 0π + decay with a branching fraction of β(B + →K*(892) 0π +)=(19. 4 +4.2+2.1+3.5 -3.9-2.1-6.8) × 10 -6.