| Autor: |
Hosomi, K., Ma, T., Ajimura, S., Aoki, K., Dairaku, S., Fu, Y. Y., Fujioka, H., Futatsukawa, K., Imoto, W., Kakiguchi, Y., Kawai, M., Kinoshita, S., Koike, T., Maruyama, N., Mimori, M., Minami, S., Miura, Y., Miwa, K., Miyagi, Y., Nagae, T., Nakajima, D., Noumi, H., Shirotori, K., Suzuki, T., Takahashi, T., Takahashi, T. N., Tamura, H., Tanida, K., Terada, N., Toyoda, A., Tsukada, K., Ukai, M., Zhou, S. H. |
| Rok vydání: |
2015 |
| Předmět: |
|
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1093/ptep/ptv113 |
| Popis: |
Level structure of the $^{12}_{\Lambda}$C hypernucleus was precisely determined by means of $\gamma$-ray spectroscopy. We identified four $\gamma$-ray transitions via the $^{12}$C$(\pi^{+},K^{+}\gamma)$ reaction using a germanium detector array, Hyperball2. The spacing of the ground-state doublet $(2^{-}_{1},1^{-}_{1})$ was measured to be $161.5\pm0.3\text{(stat)}\pm0.3\text{(syst)}$\,keV from the direct $M1$ transition. Excitation energies of the $1^{-}_{2}$ and $1^{-}_{3}$ states were measured to be $2832\pm3\pm4$\,keV and $6050\pm8\pm7$\,keV, respectively. The obtained level energies provide definitive references for the reaction spectroscopy of $\Lambda$ hypernuclei. |
| Databáze: |
arXiv |
| Externí odkaz: |
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