A STUDY OF THE πN SCATTERING DATA WITH J P = 3/2 - AND A PROOF OF THE EXISTENCE OF THE N(1700)

Using an interaction extracted from the local hidden gauge Lagrangians and the coupled channels ρN (s-wave), πN (d-wave), πΔ (s-wave) and πΔ (d-wave), we look in the region of [Formula: see text] and we find two resonances dynamically generated which are naturally associated to the N*(1520)(3/2 - )...

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Hauptverfasser: GARZON, E. J., XIE, JUJUN, OSET, E.
Format: Tagungsbericht
Sprache:eng
Online-Zugang:Volltext
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Beschreibung
Zusammenfassung:Using an interaction extracted from the local hidden gauge Lagrangians and the coupled channels ρN (s-wave), πN (d-wave), πΔ (s-wave) and πΔ (d-wave), we look in the region of [Formula: see text] and we find two resonances dynamically generated which are naturally associated to the N*(1520)(3/2 - ) and N*(1700)(3/2 - ). The N*(1700)(3/2 - ) appears neatly as a pole in the complex plane. The free parameters of the theory are chosen to fit the πN (d-wave) data. The unitary coupled channel approach followed here, in connection with the experimental data, leads automatically to a pole in the 1700 MeV region and makes this second 3/2 - resonance unavoidable.
ISSN:2010-1945
2010-1945
DOI:10.1142/S2010194514600611