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Journal Articles

Precise determination of $^{12}_{Lambda}$ C level structure by -ray spectroscopy

Hosomi, Kenji; Ma, Y.*; Ajimura, Shuhei*; Aoki, Kanae*; Dairaku, Seishi*; Fu, Y.*; Fujioka, Hiroyuki*; Futatsukawa, Kenta*; Imoto, Wataru*; Kakiguchi, Yutaka*; et al.

Progress of Theoretical and Experimental Physics (Internet), 2015(8), p.081D01_1 - 081D01_8, 2015/08

https://doi.org/10.1093/ptep/ptv113

Times Cited Count：14 Percentile：66.39(Physics, Multidisciplinary)

Level structure of the $^{12}_{Lambda}$ C hypernucleus was precisely determined by means of -ray spectroscopy. We identified four -ray transitions via the $^{12}$ C $(pi^{+},K^{+}gamma)$ reaction using a germanium detector array, Hyperball2. The spacing of the ground-state doublet $(2^{-}, 1^{-}_{1})$ was measured to be (stat) (syst)keV from the direct transition. Excitation energies of the $1^{-}_{2}$ and $1^{-}_{3}$ states were measured to be , keV and , keV, respectively. The obtained level energies provide definitive references for the reaction spectroscopy of hypernuclei.