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ファイル | 記述 | サイズ | フォーマット | |
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PhysRevC.93.044612.pdf | 517.72 kB | Adobe PDF | 見る/開く | |
PhysRevC.97.069902.pdf | Erratum | 475.5 kB | Adobe PDF | 見る/開く |
タイトル: | Probing neutron-proton dynamics by pions |
著者: | Ikeno, Natsumi Ono, Akira Nara, Yasushi Ohnishi, Akira https://orcid.org/0000-0003-1513-0468 (unconfirmed) |
著者名の別形: | 大西, 明 |
発行日: | Apr-2016 |
出版者: | American Physical Society |
誌名: | Physical Review C |
巻: | 93 |
号: | 4 |
論文番号: | 044612 |
抄録: | In order to investigate the nuclear symmetry energy at high density, we study the pion production in central collisions of neutron-rich nuclei ¹³²Sn+¹²⁴Sn at 300 MeV/nucleon using a new approach that combines antisymmetrized molecular dynamics (AMD) and a hadronic cascade model (JAM). The dynamics of neutrons and protons is solved by AMD, and then pions and Δ resonances in the reaction process are handled by JAM. We see the mechanism by which the Δ resonance and pions are produced, reflecting the dynamics of neutrons and protons. We also investigate the impacts of cluster correlations as well as of the high-density symmetry energy on the nucleon dynamics and consequently on the pion ratio. We find that the Δ-/Δ++ production ratio agrees very well with the neutron-proton squared ratio (N/Z)² in the high-density and high-momentum region. We show quantitatively that the Δ production ratio, and therefore (N/Z)², are directly reflected in the π-/π+ ratio, with modification in the final stage of the reaction. |
記述: | Erratum: Probing neutron-proton dynamics by pions [Phys. Rev. C 93, 044612 (2016)]. Natsumi Ikeno, Akira Ono, Yasushi Nara, and Akira Ohnishi. Phys. Rev. C 97, 069902 (2018) |
著作権等: | © 2016 American Physical Society. |
URI: | http://hdl.handle.net/2433/233196 |
DOI(出版社版): | 10.1103/PhysRevC.93.044612 |
関連リンク: | https://doi.org/10.1103/PhysRevC.97.069902 |
出現コレクション: | 学術雑誌掲載論文等 |
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