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

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

2003-12-30

arxiv.org/abs/hep-ph/0312376v2

Eur.Phys.J. A22 (2004) 89-95

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, 2 figures, references added, discussion extended, to appear in Eur.Phys.J.A

Scientific paper

10.1140/epja/i2004-10027-7

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.

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