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

Measurement of branching fraction ratios and CP asymmetries in B ±→D;CPK±

Swain S. K., Browder T. E., Abe K., Abe T., Adachi I., Aihara H., Akatsu M., Asano Y., Aso T., Aushev T., Bahinipati S., Bakich A. M., Ban Y., Banas E., Bay A., Behera P. K., Bizjak I., Bondar A., Bozek A., Bračko M., Casey B. C K, Chang M. C., 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., Garmash A., Gershon T., Golob B., Guo R., Haba J., Hara T., Hayashii H., Hazumi M., Higuchi I., Higuchi T., 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., Katayama N., 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., Lange J. S., Leder G., Lee S. H., Li J., Limosani A., Lin S. W., Liventsev D., MacNaughton J., Mandl F., Matsumoto H., Matsumoto T., Matyja A., Mitaroff W.

We report results on the decay B- → DCPK - and its charge conjugate using a data sample of 85.4 × 106 BB̄ pairs recorded at the γ(4S) resonance with the Belle detector at the KEKB asymmetric e+e- storage ring. Ratios of branching fractions of Cabibbo-suppressed to Cabibbo-favored processes are determined to be Β(B- → D0K -)/Β(B- → D0 π-) = 0.077±0.005(stat)±0.006(syst), Β(B- → D 1K-)/Β(B- → D1π - = 0.093 ±0.018(stat)±0.008(syst) and Β(B - → D2K-)/Β(B- → D2 π-) = 0-108±0.019(stat)±0.007(syst) where the indices 1 and 2 represent the CP= + 1 and CP= - 1 eigenstates of the D0-D̄0 system, respectively. We find the partial-rate charge asymmetries for B- → DCPK- to be A1 =0.06±0.19(stat)±0.04(syst) and A2 = -0.19±0.17(stat)±0.05(syst). © 2003 The American Physical Society.