P11 Resonances with Dubna-Mainz-Taipei Dynamical Model for pi-N Scattering and Pion Electromagnetic Production
Shin Nan Yang, S.S. Kamalov, and L. Tiator
TL;DR
This paper uses the Dubna-Mainz-Taipei dynamical model to analyze P11 resonances in pion-nucleon scattering and electromagnetic production, identifying known and new resonances with detailed parameter estimates.
Contribution
It introduces a comprehensive analysis of P11 resonances using the DMT model, including the identification of a potential new narrow resonance around 1700 MeV.
Findings
Agreement of extracted resonance parameters with PDG values
Identification of a pole corresponding to the Roper resonance
Evidence for a narrow P11 resonance near 1700 MeV
Abstract
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.
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