Extraction of the pion-nucleon sigma-term from the spectrum of exotic baryons

Article

Abstract.

The pion-nucleon sigma-term is extracted on the basis of the soliton picture of the nucleon from the mass spectrum of usual and the recently observed exotic baryons, assuming that they have positive parity. The value found is consistent with that inferred by means of conventional methods from pion-nucleon scattering data. The study can also be considered as a phenomenological consistency check of the soliton picture of baryons.

Keywords

Mass Spectrum Soliton Elementary Particle Conventional Method Consistency Check 

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Copyright information

© Springer-Verlag Berlin/Heidelberg 2004

Authors and Affiliations

  1. 1.Institut für Theoretische Physik IIRuhr-Universität BochumBochumGermany

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