A new N* resonance as a hadronic molecular state
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.
Cite
@article{arxiv.0906.4653,
title = {A new N* resonance as a hadronic molecular state},
author = {Daisuke Jido and Yoshiko Kanada-En'yo},
journal= {arXiv preprint arXiv:0906.4653},
year = {2015}
}
Comments
Talk given at Workshop on the Physics of Excited Nucleon -- NSTAR2009, Beijing April 19 - 22, 2009