| Autor: |
N. Horikawa, Kunio Takamatsu, T. Kinashi, Ryuichi Takashima, Shuji Fukui, T. Iwata, Kazuhito Ohmi, T. Matsuda, M. Kurashina, Tsuneaki Tsuru, Toru Sato, Susumu Inaba, Y. Ishizaki, Y. Inagaki, Chihiro Ohmori, I. Maeda, Yoshiji Yasu, T. Nakamura, Kunikazu Mori, T. Inagaki, Toru Nakanishi |
| Rok vydání: |
1991 |
| Předmět: |
|
| Zdroj: |
Physics Letters B. 257:241-246 |
| ISSN: |
0370-2693 |
| DOI: |
10.1016/0370-2693(91)90888-w |
| Popis: |
A further study on the ηππ system in the charge exchange reaction π−p→ηπ+π−n at 8.95 GeV/c has been performed at KEK. A partial wave analysis was done for three t′ regions, 0–0.05, 0.05–0.20 and 0.20–0.60 (GeV/c)2 in the mass range between 1.155 and 1.555 GeV. The IJpc=00−+ wave via a0(980)π intermediate state shows clear peaks of η(1295) and η(1400) in the third t′ region. The state η(1400) shows a mass value of 1388±4 MeV. The 01++ wave via a0π shows also a clear peak of f1 (1285) in the third t′ region. The higher mass region between 1.51 and 1.83 GeV was also studied for the same three t′ regions. No I=0 pseudoscalar state is seen in the analysis. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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