Peter C. Bruns, Maxim Mai, U. -G. Meißner
Published 2010-12-10Version 1
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.
Comments: 7 pages, 5 figures, version to be published in PLB
Journal: Phys.Lett.B697:254-259,2011
The nature of Lambda(1405) hyperon resonance in chiral dynamics
Chiral dynamics of p-wave in K^- p and coupled states
The nature of the Lambda(1405) resonance in chiral dynamics
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