Inclusive ϕ-meson production in electron-positron interactions in the energy region of theϒ-resonances

Autor: Albrecht, H., Böckmann, P., Gläser, R., Harder, G., Krüger, A., Nippe, A., Schäfer, M., Schmidt-Parzefall, W., Schröder, H., Schulz, H. D., Sefkow, F., Spengler, J., Wurth, R., Yagil, A., Appuhn, R. D., Drescher, A., Kamp, D., Kolanoski, H., Mankel, R., Matthiesen, U., Scheck, H., Schweda, G., Spaan, B., Walther, A., Wegener, D., Gabriel, J. C., Ruf, T., Schael, S., Schubert, K. R., Stiewe, J., Strahl, K., Waldi, R., Werner, S., Edwards, K. W., Frisken, W. R., Kapitza, H., Kutschke, R., MacFarlane, D. B., McLean, K. W., Nilsson, A. W., Orr, R. S., Parsons, J. A., Patel, P. M., Prentice, J. D., Seidel, S. C., Swain, J. D., Tsipolitis, G., Yoon, T. -S., Ammar, R., Ball, S., Coppage, D., Davis, R., Kanekal, S., Kwak, N., Boštjančič, B., Kernel, G., Križan, P., Križnič, E., Pleško, M., Cronström, H. I., Jönsson, L., Babaev, A., Danilov, M., Fominykh, B., Golutvin, A., Gorelov, I., Lubimov, V., Matveev, V., Semenov, A., Semenov, S., Shevchenko, V., Soloshenko, V., Tchistilin, V., Tichomirov, I., Zaitsev, Yu., Childers, R., Darden, C. W., Fernholz, R. C.
Zdroj: Zeitschrift für Physik C Particles and Fields; December 1989, Vol. 41 Issue: 4 p557-566, 10p
Abstrakt: We report on a high precision measurement of ϕ-meson production in continuum events and in direct decays of the Υ(1S)- and Υ(2S)-mesons. The ratio of the total production rate of ϕ-mesons in direct Υ(1S)- and Υ(2S)-decays over that in continuum events is 1.32±0.08±0.09 and 1.07±0.13±0.11 respectively. This is compatible with the corresponding ratio obtained for lighter mesons, but is appreciably smaller than the relative baryon production rate.
Databáze: Supplemental Index
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