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ΣNN quasibound states in He3 (K−, π∓) reactions at 600 MeV/c
| Title: | ΣNN quasibound states in He3 (K−, π∓) reactions at 600 MeV/c |
| Authors: | Harada, Toru Browse this author →KAKEN DB | | Hirabayashi, Yoshiharu Browse this author →KAKEN DB |
| Issue Date: | 7-May-2014 |
| Publisher: | American Physical Society |
| Journal Title: | Physical Review C |
| Volume: | 89 |
| Issue: | 5 |
| Start Page: | 054603 |
| Publisher DOI: | 10.1103/PhysRevC.89.054603 |
| Abstract: | We theoretically demonstrate the inclusive and semiexclusive spectra in the He3(K−, π∓) reactions at 600 MeV/c (4∘) within a distorted-wave impulse approximation, using a coupled (2N−Λ)+(2N−Σ) model with a spreading potential. We present the possible existence of the ΣNN quasibound state with Jπ= 1/2+, T≃ 1 near the Σ threshold, predicted by a 2N−Y folding-model potential derived from YN g-matrices. The result shows that a signal of the 3ΣHe quasibound state is clearly confirmed near the Σ threshold in the π− spectrum, whereas a peak of the 3Σn quasibound state is rather reduced in the π+ spectrum owing to the interference effects caused by the 3S1-1S0 admixture in the NN pair. The mechanism of Σ production for these spectra and charge symmetry breaking effects are also discussed. |
| Rights: | ©2014 American Physical Society |
| Type: | article |
| URI: | http://hdl.handle.net/2115/56862 |
| Appears in Collections: | 情報基盤センター (Information Initiative Center) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 平林 義治
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