Article ID Journal Published Year Pages File Type
10722987 Physics Letters B 2011 6 Pages PDF
Abstract
We analyze s-wave pion-nucleon scattering in a unitarized chiral effective Lagrangian including all dimension two contact terms. We find that both the S11(1535) and the S11(1650) are dynamically generated, but the S31(1620) is not. We further discuss the structure of these dynamically generated resonances.
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Related Topics
Physical Sciences and Engineering Physics and Astronomy Nuclear and High Energy Physics
Preview
Chiral dynamics of the S11(1535) and S11(1650) resonances revisited
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