Вы находитесь на старом сайте НГУ. Перейти на новый сайт

ISSN - 00319007, EISSN - 10797114, Physical Review Letters, 2005, vol. 94, p. -

Observation of the D1(2420)→Dπ+π- decays

Abe K., Abe K., Adachi I., Aihara H., Akatsu M., Anipko D., Asano Y., Aushev T., Aziz T., Bahinipati S., Bakich A. M., Banerjee S., Bedny I., Bitenc U., Bizjak I., Blyth S., Bondar A., Bozek A., Bračko M., Brodzicka J., Chang P., Chao Y., Chen A., Chen K. F., Chen W. T., Cheon B. G., Chistov R., Choi S. K., Choi Y., Chuvikov A., Dalseno J., Danilov M., Dash M., Drutskoy A., Eidelman S., Eiges V., Fang F., Fratina S., Gabyshev N., Garmash A., Gershon T., Gokhroo G., Golob B., Haba J., Hastings N. C., Hayasaka K., Hayashii H., Hazumi M., Higuchi T., Hinz L., Hokuue T., Hoshi Y., Hou S., Hou W. S., Iijima T., Imoto A., Inami K., Ishikawa A., Itoh R., Iwasaki Y., Kang J. H., Kang J. S., Kapusta P., Kataoka S. U., Katayama N., Kawai H., Kawasaki T., Kichimi H., Kim H. J., Kim J. H., Kim S. K., Kim S. M., Kinoshita K., Koppenburg P., Korpar S., Krian P., Krokovny P., Kuo C. C., Kuzmin A., Kwon Y. J., Leder G., Lee S. H., Lesiak T., Li J., Lin S. W., Liventsev D., MacNaughton J., Majumder G., Mandl F., Matsumoto T., Matyja A., Mitaroff W., Miyata H., Mizuk R., Nagamine T.

We report on the first observation of D10(2420)→D0π-π+ and D1+(2420)→D+π-π+ decays (where the contribution from the dominant known D1→D*π decay mode is excluded) in the B-→D10π- and B̄0→D1+π- decays, respectively. The observation is based on 15.2×107 BB̄ events collected with the Belle detector at the KEKB collider. We also set 90% confidence level upper limits for the branching fractions of the four following decays: B-→D10π-, D10→D *0π-π+, B̄0→D1+π-, D1+→D*+π-π+, B-→D2*0(2460)π-, D2*0→D*0π-π+, B̄0→D2*+(2460)π-, D2*+→D*+π-π+. © 2005 The American Physical Society.