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《中国物理C》(英文)编辑部
2024年10月30日

A new N* resonance as a hadronic molecular state

  • We report our recent work on a hadronic molecule state of the KKN system with I=1/2 and JP=1/2+. We assume that the Λ(1405) resonance and the scalar mesons, f0(980), a0(980), are reproduced as quasi-bound states of KN and KK, respectively. Performing non-relativistic three-body calculations with a variational method for this system, we find a quasibound state of the KKN system around 1910 MeV below the three-body breakup threshold. This state corresponds to a new baryon resonance of N* with JP=1/2+. We find also that this resonance has the cluster structure of the two-body bound states keeping their properties as in the isolated two-particle systems. We also briefly discuss another hadronic molecular state composed by two K and one N, which corresponds to a Ξ* resonance.

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Daisuke Jido and Yoshiko Kanada-En'yo. A new N* resonance as a hadronic molecular state[J]. Chinese Physics C, 2009, 33(12): 1312-1317. doi: 10.1088/1674-1137/33/12/044
Daisuke Jido and Yoshiko Kanada-En'yo. A new N* resonance as a hadronic molecular state[J]. Chinese Physics C, 2009, 33(12): 1312-1317.  doi: 10.1088/1674-1137/33/12/044 shu
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Received: 2009-08-07
Revised: 1900-01-01
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A new N* resonance as a hadronic molecular state

    Corresponding author: Daisuke Jido,

Abstract: 

We report our recent work on a hadronic molecule state of the KKN system with I=1/2 and JP=1/2+. We assume that the Λ(1405) resonance and the scalar mesons, f0(980), a0(980), are reproduced as quasi-bound states of KN and KK, respectively. Performing non-relativistic three-body calculations with a variational method for this system, we find a quasibound state of the KKN system around 1910 MeV below the three-body breakup threshold. This state corresponds to a new baryon resonance of N* with JP=1/2+. We find also that this resonance has the cluster structure of the two-body bound states keeping their properties as in the isolated two-particle systems. We also briefly discuss another hadronic molecular state composed by two K and one N, which corresponds to a Ξ* resonance.

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