| Autor: |
Albrecht, H., Böckmann, P., Gläser, R., Harder, G., Krüger, A., Nippe, A., Reidenbach, M., Schäfer, M., Schmidt-Parzefall, W., Schröder, H., Schulz, H. D., Sefkow, F., Spengler, J., Wurth, R., Yagil, A., Appuhn, R. D., Drescher, A., Hast, C., Kamp, D., Kolanoski, H., Lindner, A., Mankel, R., Matthiesen, U., Scheck, H., Schweda, G., Spaan, B., Walther, A., Wegener, D., Funk, W., Gabriel, J. C., Stiewe, J., 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., Ruf, T., Schael, S., Schubert, K. R., Strahl, K., Waldi, R., 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., Rostovtsev, A., 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; September 1988, Vol. 41 Issue: 3 p405-411, 7p |
| Abstrakt: |
The production of η-mesons in τ-decays has been studied with the ARGUS detector at the DORIS II storage ring. τ+τ− events were selected by their characteristic 1-versus-3 charged particle topology. The π+π− invariant mass distribution was used to search for evidence of η production in τ-decays. No signal was observed, leading to upper limits at 95% CL of Br(τ−→ηπ−π0vτ)<1.1%, Br(τ−→ηηπ−vτ)<0.8%, Br(τ−→ηηπ−π0vτ)<0.9% and Br(τ−→ηπ−π0π0vτ)<1.2%. A search for the decay τ−→ηπ−vτ, where the π0 from the decay η→π+π−π0 is also reconstructed, yield an upper limit at 95% CL of Br(τ−→ηπ−vτ)<0.9%. In addition, the inclusive value (1.65±0.3±0.2)% for Br(τ−→ωX−vτ) follows from this analysis. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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