Вы находитесь на старом сайте НГУ. Перейти на новый сайт

ISSN - 14346044, EISSN - 14346052, European Physical Journal C, 2007, vol. 53, p. 1-14

Study of charmonia in four-meson final states produced in two-photon collisions

Uehara S., Adachi I., Aihara H., Aulchenko V., Aushev T., Bakich A. M., Balagura V., Barberio E., Bay A., Belous K., Bitenc U., Bondar A., Bozek A., Bračko M., Brodzicka J., Browder T. E., Chang P., Chao Y., Chen A., Chen K. F., Chen W. T., Cheon B. G., Cho I. S., Choi Y., Choi Y. K., Dalseno J., Dash M., Drutskoy A., Eidelman S., Epifanov D., Fratina S., Gabyshev N., Gokhroo G., Golob B., Ha H., Haba J., Hayasaka K., Hayashii H., Hazumi M., Heffernan D., Hokuue T., Hoshi Y., Hou W. S., Hyun H. J., Iijima T., Ikado K., Inami K., Ishikawa A., Itoh R., Iwasaki M., Iwasaki Y., Kah D. H., Kaji H., Kang J. H., Kawai H., Kawasaki T., Kichimi H., Kim H. O., Kim S. K., Kim Y. J., Korpar S., Križan P., Krokovny P., Kumar R., Kuo C. C., Kuzmin A., Kwon Y. J., Lee J. S., Lee M. J., Lee S. E., Lesiak T., Li J., Limosani A., Lin S. W., Liu Y., Liventsev D., Mandl F., Matsumoto T., Matyja A., McOnie S., Medvedeva T., Miyake H., Miyata H., Miyazaki Y., Mizuk R.

We report measurements of charmonia produced in two-photon collisions and decaying to four-meson final states, where the meson is either a charged pion or a charged kaon. The analysis is based on a 395 fb-1 data sample accumulated with the Belle detector at the KEKB electron-positron collider. We observe signals for the three C-even charmonia ηc(1S), χc0(1P) and χc2(1P) in the π+π -π+π-, K+K -π+π- and K+K -K+K- decay modes. No clear signals for ηc(2S) production are found in these decay modes. We have also studied resonant structures in charmonium decays to two-body intermediate meson resonances. We report the products of the two-photon decay width and the branching fractions, ΓγB, for each of the charmonium decay modes. © 2007 Springer-Verlag / Società Italiana di Fisica.