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SUMMARY:The Inverse Amplitude Method and Heavy Barion Chiral Perturbation 
 Theory applied to pion Nucleon scattering
DTSTART;VALUE=DATE-TIME:20000224T103000Z
DTEND;VALUE=DATE-TIME:20000224T113000Z
DTSTAMP;VALUE=DATE-TIME:20261011T214002Z
UID:indico-event-1160@indico.ific.uv.es
DESCRIPTION:By means of the Inverse Amplitude Method we unitarize the elas
 tic pion-nucleon scattering amplitudes obtained from Heavy Baryon Chiral P
 erturbation Theory to $\\Od(q^3)$. Within this approach we can enlarge the
 ir applicability range and generate the $\\Delta(1232)$ resonance. We can 
 find a reasonable description of the pion nucleon phase shifts with $\\Od 
 (q^2)$ parameters in agreement with the resonance saturation hypothesis. H
 owever\, the uncertainties in the analysis of the low energy data as well 
 as the large number of chiral parameters\, which can have strong correlati
 ons\, allow us to obtain very good fits with rather different sets of chir
 al constants. We also comment on possible reorderings of the expansion whi
 ch\, once unitarized\, provide a remarkable description of the data.\n\nht
 tps://indico.ific.uv.es/event/1160/
LOCATION:Edf. Institutos de Investigación Sala de Juntas del IFIC
URL:https://indico.ific.uv.es/event/1160/
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