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arXiv · 0909.1356

Disentangling the dynamical origin of P11 Nucleon Resonances

N. Suzuki·B. Julia-Diaz·H. Kamano·T. -S. H. Lee·A. Matsuyama·T. Sato
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Abstract

We show that two almost degenerate poles near the $πΔ$ threshold and the next higher mass pole in the $P_{11}$ partial wave of $πN$ scattering evolve from a single bare state through its coupling with $πN$, $ηN$ and $ππN$ reaction channels. This finding provides new information on understanding the dynamical origins of the Roper $N^*(1440)$ and $N^*(1710)$ resonances listed by Particle Data Group. Our results for the resonance poles in other $πN$ partial waves are also presented.

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N. Suzuki, B. Julia-Diaz, H. Kamano, T. -S. H. Lee, A. Matsuyama, T. Sato. 2010-01-07. Disentangling the dynamical origin of P11 Nucleon Resonances. https://doi.org/10.1103/physrevlett.104.042302

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