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ISSN - 15507998, Physical Review D - Particles, Fields, Gravitation and Cosmology, 2003, vol. 70, p. 071101-1

Measurement of the e<sup>+</sup> e<sup>-</sup> → D <sup>(*)+</sup> D<sup>(*)-</sup> cross sections

Uglov T., Abe K., Abe K., Abe T., Aihara H., Akatsu M., Asano Y., Aso T., Aulchenko V., Bakich A. M., Ban Y., Bitenc U., Bizjak I., Bondar A., Bozek A., Bračko M., Browder T. E., Chao Y., Cheon B. G., Chistov R., Choi S. K., Choi Y., Chuvikov A., Cole S., Danilov M., Drutskoy A., Eidelman S., Eiges V., Enari Y., Epifanov D., Fratina S., Gabyshev N., Garmash A., Gershon T., Golob B., Hastings N. C., Hayashii H., Hazumi M., Hokuue T., Hoshi Y., Huang H. C., Inami K., Ishikawa A., Iwasaki H., Iwasaki M., Iwasaki Y., Kang J. H., Kang J. S., Kapusta P., Katayama N., Kawai H., Kawasaki T., Kichimi H., Kim H. J., Kim J. H., Kim S. K., Kinoshita K., Koppenburg P., Korpar S., Krokovny P., Kumar S., Kuzmin A., Kwon Y. J., Lange J. S., Leder G., Lee S. H., Lesiak T., Li J., Lin S. W., Liventsev D., MacNaughton J., Majumder G., Matsumoto H., Matsumoto T., Matyja A., Mitaroff W., Miyake H., Miyata H., Mohapatra D., Nagamine T., Nagasaka Y., Nakadaira T., Nakano E., Nakao M., Nishida S., Nitoh O., Nozaki T., Ogawa S., Ohshima T., Okuno S., Olsen S. L., Ostrowicz W., Ozaki H., Pakhlov P., Palka H., Park C. W.

We report first measurements of e<sup>+</sup>e<sup>-</sup> → D <sup>(*)+</sup> D<sup>(*)-</sup> processes far above threshold. The cross sections for e<sup>+</sup> e<sup>-</sup> → D<inf>T</inf>* <sup>+</sup> D<inf>T</inf>*<sup>-</sup> and e<sup>+</sup> e<sup>-</sup> → D<sup>+</sup> D<inf>T</inf>*<sup>-</sup> at √s ≃ 10.6 GeV/c<sup>2</sup> are measured to be 0.55 ± 0.03 ± 0.05 and 0.62 ± 0.03 ± 0.06 pb, respectively. We set upper limits on the cross sections for e<sup>+</sup>e<sup>-</sup> → D<inf>T</inf>*<sup>+</sup> D<inf>T</inf>*<sup>-</sup>, e<sup>+</sup> e<sup>-</sup> → D <inf>L</inf>*<sup>+</sup> D<inf>L</inf>*<sup>-</sup>, e<sup>+</sup> e<sup>-</sup> → D<inf>L</inf>*<sup>+</sup> D<inf>L</inf>* <sup>-</sup>, and e<sup>+</sup> e<sup>-</sup> → D<sup>+</sup> D <inf>-</inf>* processes. The analysis is based on 88.9 fb<sup>-1</sup> of data collected by the Belle experiment at the KEKB e<sup>+</sup>e<sup>-</sup> asymmetric collider.