| Autor: |
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., Nagasaka, Y., Nakano, E., Nakao, M., Nakazawa, H., Natkaniec, Z., Nishida, S., Nitoh, O., Ogawa, S., Ohshima, T., Okuno, S., Olsen, S.L., Onuki, Y., Ozaki, H., Pakhlov, P., Pakhlova, G., Palka, H., Park, C.W., Park, H., Peak, L.S., Pestotnik, R., Piilonen, L.E., Sahoo, H., Sakai, Y., Schneider, O., Seidl, R., Senyo, K., Sevior, M.E., Shapkin, M., Shibuya, H., Shiu, J.-G., Shwartz, B., Singh, J.B., Sokolov, A., Somov, A., Soni, N., Stanič, S., Starič, M., Stoeck, H., Sumiyoshi, T., Takasaki, F., Tamai, K., Tanaka, M., Taylor, G.N., Teramoto, Y., Tian, X.C., Tikhomirov, I., Tsuboyama, T., Unno, Y., Uno, S., Urquijo, P., Usov, Y., Varner, G., Vervink, K., Villa, S., Vinokurova, A., Wang, C.H., Wang, P., Watanabe, Y., Won, E., Yabsley, B.D., Yamaguchi, A., Yamashita, Y., Yuan, C.Z., Zhang, C.C., Zhang, Z.P., Zhilich, V., Zupanc, A. |
| Jazyk: |
angličtina |
| Rok vydání: |
2007 |
| Předmět: |
|
| Popis: |
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 395fb^{-1} data sample accumulated with the Belle detector at the KEKB electron-positron collider. We observe signals for the three C-even charmonia eta_c(1S), chi_{c0}(1P) and chi_{c2}(1P) in the pi^+pi^-pi^+pi^-, K^+K^-pi^+pi^- and K^+K^-K^+K^- decay modes. No clear signals for eta_c(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, Gamma_{gamma gamma}B, for each of the charmonium decay modes.
22 pages, 12 figures |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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