P11 Resonances with Dubna-Mainz-Taipei Dynamical Model for pi-N   Scattering and Pion Electromagnetic Production
  We present the results on P11 resonances obtained with Dubna-Mainz-Taipei (DMT) dynamical model for pion-nucleon scattering and pion electromagnetic production. The extracted values agree well, in general, with PDG values. One pole is found corresponding to the Roper resonance and two more resonances are definitely needed in DMT model. We further find indication for a narrow P11 resonance at around 1700 MeV with a width of around 50 MeV in both pi-N and gamma-pi reactions. 
Shin Nan Yang, S.S. Kamalov, and L. Tiator
nucl-th hep-ph