A new N~* resonance as a hadronic molecular state
We report our recent work on a hadronic molecule state of the K(K)N system with I=1/2 and J~P=1/2~+. We assume that the A(1405) resonance and the scalar mesons, f_0(980), a_0(980), are reproduced as quasi-bound states of (K)N and K(K), respectively. Performing non-relativistic three-body calculations with a variational method for this system, we find a quasibound state of the K(K)N system around 1910 MeV below the three-body breakup threshold. This state corresponds to a new baryon resonance of N~* with J~P=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.
three-body bound state Λ(1405) resonance kaon-nucleon interaction variational calculation
Daisuke Jido Yoshiko Kanada-Enyo
Yukawa Institute for Theoretical Physics,Kyoto University,Kyoto 606-8502,Japan
国际会议
The 12th International Workshop on the Physics Ezcited Nucleon(2009核子共振态物理国际研讨会)
北京
英文
1312-1317
2009-04-19（万方平台首次上网日期，不代表论文的发表时间）