| Autor: |
Ryugo S. Hayano, Hans Geissel, Takashi Ohtsubo, Masahiro Sato, M. Shindo, Kunio Suzuki, M. Fujita, H. Gilg, A. Gillitzer, G. Münzenberg, Toshimitsu Yamazaki, P. Kienle, Helmut Weick, Takatoshi Suzuki, K. Itahashi, Satoru Hirenzaki, M. Winkler, Milan Matos, T. Yoneyama, M. Iwasaki |
| Rok vydání: |
2003 |
| Předmět: |
|
| Zdroj: |
Progress of Theoretical Physics Supplement. 149:32-41 |
| ISSN: |
0375-9687 |
| DOI: |
10.1143/ptps.149.32 |
| Popis: |
We observed deeply bound π - is states in 1 1 5 , 1 1 9 , 1 2 3 Sn for the first time in 1 1 6 , 1 2 0 , 1 2 4 Sn(d3,He) reactions at recoil free conditions to determine the 1s binding energies and the widths precisely. A preliminary result is used to deduce the isovector scattering amplitude as b 1 = 0.115 ′ 0.005 m - 1 π . The observed enhancement of b 1 over the free πN value infers 35% reduction of f 2 π at the normal nuclear density. ρ = 0.17 fm - 3 . |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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