Precise determination of 12 A C level structure by γ-ray spectroscopy

Kenji Hosomi, Yue Ma, Shuhei Ajimura, Kanae Aoki, Seishi Dairaku, Yuanyong Fu, Hiroyuki Fujioka, Kenta Futatsukawa, Wataru Imoto, Yutaka Kakiguchi, Masaharu Kawai, Sari Kinoshita, Takeshi Koike, Nayuta Maruyama, Masahiro Mimori, Shizu Minami, Yusuke Miura, Koji Miwa, Yohei Miyagi, Tomofumi NagaeDaisuke Nakajima, Hiroyuki Noumi, Kotaro Shirotori, Tomokazu Suzuki, Toshiyuki Takahashi, Tomonori N. Takahashi, Hirokazu Tamura, Kiyoshi Tanida, Nobuhiro Terada, Akihisa Toyoda, Kyo Tsukada, Mifuyu Ukai, Shuhua Zhou

研究成果: Article査読

12 被引用数 (Scopus)

抄録

The level structure of the 12 λ C hypernucleus was precisely determined by means of γ-ray spectroscopy. We identified four γ-ray transitions via the 12C(π + , K+ γ ) reaction using a germanium detector array, Hyperball2. The spacing of the ground-state doublet (2- , 1- 1 ) was measured to be 161.5 ± 0.3(stat) ± 0.3(syst) keV from the direct M1 transition. Excitation energies of the 1- 2 and 1- 3 states were measured to be 2832 ± 3 ± 4 keV and 6050 ± 8 ± 7 keV, respectively. The level energies obtained provide definitive references for the reaction spectroscopy of λ hypernuclei.

本文言語English
論文番号81D01
ジャーナルProgress of Theoretical and Experimental Physics
2015
8
DOI
出版ステータスPublished - 2015 8

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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