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ISSN - 00319007, EISSN - 10797114, Physical Review Letters, 2008, vol. 100, p. -

Observation of the ψ(4415)→DD̄2*(2460) decay using initial-state radiation

Pakhlova G., Adachi I., Aihara H., Arinstein K., Aulchenko V., Aushev T., Bakich A. M., Balagura V., Barberio E., Bedny I., Belous K., Bitenc U., Bondar A., Bračko M., Brodzicka J., Browder T. E., Chen A., Chen W. T., Cheon B. G., Chiang C. C., Chistov R., Cho I. S., Choi Y., Dalseno J., Danilov M., Dash M., Drutskoy A., Eidelman S., Epifanov D., Gabyshev N., Golob B., Ha H., Haba J., Hayasaka K., Hazumi M., Heffernan D., Hoshi Y., Hou W. S., Hsiung Y. B., Hyun H. J., Inami K., Ishikawa A., Ishino H., Itoh R., Iwasaki M., Iwasaki Y., Joshi N. J., Kah D. H., Kang J. H., Kawasaki T., Kibayashi A., Kichimi H., Kim H. J., Kim H. O., Kim Y. J., Kinoshita K., Korpar S., Krizan P., Krokovny P., Kumar R., Kuo C. C., Kuzmin A., Kwon Y. J., Lange J. S., Lee M. J., Lee S. E., Lesiak T., Lin S. W., Liventsev D., Mandl F., Marlow D., McOnie S., Medvedeva T., Miyake H., Mizuk R., Mohapatra D., Moloney G. R., Nagasaka Y., Nakano E., Nakao M., Nakazawa H., Nishida S., Nitoh O., Ogawa S., Ohshima T., Okuno S., Olsen S. L., Ozaki H., Pakhlov P., Park H., Park K. S., Peak L. S., Pestotnik R., Piilonen L. E.

We report measurements of the exclusive cross section for e+e-→D0D-π+ over the center-of-mass energy range 4.0 GeV to 5.0 GeV with initial-state radiation and the first observation of the decay ψ(4415)→D0D-π+. From a study of the resonant substructure in ψ(4415) decay we conclude that the ψ(4415)→D0D-π+ decay is dominated by ψ(4415)→DD̄2*(2460). We obtain B(ψ(4415)→D0D-πnonresonant+)/B(ψ(4415)→DD̄ 2*(2460)→D0D-π+)<0.22 at 90% C.L. The analysis is based on a data sample collected with the Belle detector with an integrated luminosity of 673fb-1. © 2008 The American Physical Society.