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ISSN - 00319007, EISSN - 10797114, Physical Review Letters, 2005, vol. 95, p. -

Evidence for B0→D+D- and observation of B-→D0D- and B-→D0D*- decays

Majumder G., Abe K., Abe K., Adachi I., Aihara H., Asano Y., Aulchenko V., Aushev T., Bahinipati S., Bakich A. M., Banerjee S., Bedny I., Bitenc U., Bizjak I., Blyth S., Bondar A., Bozek A., Bračko M., Brodzicka J., Browder T. E., Chang M. C., Chang P., Chao Y., Chen A., Chen K. F., Chen W. T., Cheon B. G., Chistov R., Choi Y., Chuvikov A., Cole S., Dalseno J., Danilov M., Dash M., Drutskoy A., Eidelman S., Enari Y., Fratina S., Gabyshev N., Gershon T., Go A., Gokhroo G., Golob B., Gorišek A., Haba J., Hara T., Hastings N. C., Hayasaka K., Hayashii H., Hazumi M., Hinz L., Hokuue T., Hoshi Y., Hou S., Hou W. S., Hsiung Y. B., Iijima T., Imoto A., Inami K., Ishikawa A., Itoh R., Iwasaki M., Kang J. H., Kang J. S., Katayama N., Kawai H., Kawasaki T., Khan H. R., Kichimi H., Kim H. J., Kim S. K., Kim S. M., Križan P., Krokovny P., Kulasiri R., Kumar S., Kuo C. C., Kuzmin A., Kwon Y. J., Leder G., Lee S. E., Lesiak T., Li J., Lin S. W., Liventsev D., MacNaughton J., Mandl F., Matsumoto T., Matyja A., Mikami Y., Mitaroff W., Miyabayashi K., Miyake H., Miyata H., Mizuk R., Mohapatra D.

We report evidence for B0→D+D- and the first observation of the decay modes B-→D0D- and B-→D0D*- based on a sample of 152×106 BB̄ events collected by the Belle detector at KEKB. The branching fractions for B0→D+D-, B-→D0D-, and B-→D0D*- are found to be (1.91±0.51±0.30)×10-4, (4.83±0.78±0.58) ×10-4, and (4.57±0.71±0.56)×10-4, respectively. Charge asymmetries in the B-→D0D- and B-→D0D*- channels are consistent with zero. © 2005 The American Physical Society.