| Autor: |
K. Shoji, Hirotaka Takahashi, Y. Fukao, Hiroyuki Okada, Hirohiko Sato, Se-Yeon Kim, B. H. Choi, Norio Saito, K. Aoki, T. Hibi, B. D. Park, Tadamitsu Kishimoto, J. S. Song, M. Kurosawa, M. Hayata, K. Imai, T. Hayakawa, J. Asai, S. J. Kim, C. S. Yoon, Tomoko Yoshida, Masaharu Ieiri, Yuji Shimizu, Akira Sato, H. Funahashi, Kiyoshi Tanida, Kaoru Taketani, Akira Ohnishi, K. Miwa, H. Akikawa, I. G. Park, Kazuhiko Yamamoto, C. J. Yoon, J. K. Ahn, Kazuma Nakazawa |
| Rok vydání: |
2011 |
| Předmět: |
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| Zdroj: |
Journal of the Korean Physical Society. 59:1003-1006 |
| ISSN: |
0374-4884 |
| Popis: |
We determined scattering length and effective range of ¥E¥E scattering for the ¥E¥E relative energy (M¥E¥E-2M¥E) from ¥E¥E threshold to 30 MeV/c2. Phase shift of the ¥E¥E wave function which described by scattering length and effective range was determined by fitting the ¥E¥E mass spectrum. The obtained scattering length -0.10+0.37-1.56 i¾ 0.04, and effective range 13.90 +14.35-9.13 i¾ 10.53 fm is the most consistent with the values predicted by using a series of the Nijmegen soft core models NSC97's. However the predicted values by using the Nijmegen hard core model ND (G-matrix), the extended soft core model ESC00, and the Kyoto-Niigata FSS are out of three standard deviations from the determined scattering parameters. Further, we determine ¥E¥E potential by fitting the ¥E¥E invariant mass spectrum using numerically solved ¥E¥E wave function with two-Gaussian shaped potential well. The ¥E¥E scattering parameters derived from the wave function are found to be scattering length -0.09, and effective range 29.34 fm with a maximum phase shift of 2.4 deg. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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