The Fundamental Kaonic Nuclear Cluster K^-pp : Its Structure and Formation(Kaons in nuclei, Chiral dynamics in nuclear medium, New Frontiers in QCD-Exotic Hadrons and Hadronic Matter-)
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概要
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We have studied the structure of K^-pp comprehensively by solving this three-body system exactly in a variational method, starting from the Ansatz that the Λ(1405) resonance (≡Λ^*) is a K^-p bound state. We have found that our original prediction for the presence of K^-pp as a compact bound system with M = 2322MeV/c^2, B_K=48MeV and Γ = 61MeV remains unchanged by varying the KN and NN interactions widely as far as they reproduce Λ(1405). The structure of K^-pp reveals a molecular feature, namely, the K^- in Λ^* as an "atomic center" plays a key role in producing strong covalent bonding with the other proton. We have shown that the elementary process, p+p → K^++Λ^*+p, which occurs in a short impact parameter and with a large momentum transfer, leads to unusually large self-trapping of Λ^* by the participating proton, since the Λ^*-p system exists as a compact doorway state propagating to K^-pp.
- 理論物理学刊行会の論文
- 2007-11-09
著者
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YAMAZAKI Toshimitsu
Department of Physics,University of Tokyo
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Yamazaki Toshimitsu
Riken Nishina Center
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Yamazaki Toshimitsu
Department Of Physics University Of Tokyo:riken Nishina Center
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Yamazaki Toshimitsu
Department Of Physics Faculty Of Science University Of Tokyo
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Akaishi Yoshinori
RIKEN Nishina Center
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Akaishi Yoshinori
Riken Nishina Center:college Of Science And Technology Nihon University
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Yamazaki Toshimitsu
Department Of Physics And Meson Science Laboratory Faculty Of Science University Of Tokyo
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YAMAZAKI Toshimitsu
Department of Physics, University of Tokyo:RIKEN Nishina Center
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AKAISHI Yoshinori
RIKEN Nishina Center:College of Science and Technology, Nihon University
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