The role of S11 resonance in pi N Scattering
Yohanes Surya, Kam Chan Hin, T. C. Au Yeung, W. Z. Shangguan, Wirawan Purwanto, Eddy Yusuf, Darmadi Kusno, Oki Gunawan
Abstract
We analyze Pion Nucleon Scattering up to 700 MeV using a simple, relativistic, unitary model1. The kernel of the integral equation includes nucleon, roper, delta, D13 as well as S11 poles with their corresponding crossed pole terms approximated by contact interactions. The s- and p- wave phase shifts are calculated from the model and shown to agree very well with the values derived from pi N scattering data 2. All parameters which involve S11 are presented.
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