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arXiv · 0906.4653

A new N* resonance as a hadronic molecular state

Daisuke Jido·Yoshiko Kanada-En'yo
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Abstract

We report our recent work on a hadronic molecule state of the KbarKN system with I=1/2 and J^P=1/2^+. We assume that the Lambda(1405) resonance and the scalar mesons, f_{0}(980), a_{0}(980), are reproduced as quasi-bound states of KbarN and KbarK, respectively. Performing non-relativistic three-body calculations with a variational method for this system, we find a quasibound state of the KbarKN 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 Kbar and one N, which corresponds to a Xi^* resonance.

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Daisuke Jido, Yoshiko Kanada-En'yo. 2009-06-25. A new N* resonance as a hadronic molecular state. https://doi.org/10.1088/1674-1137/33/12/044

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