Pion-nucleon P_33 and P_11 scatterings in the Lippmann-Schwinger approach

Takashi Inoue

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arXiv · 0710.3026

Pion-nucleon P_33 and P_11 scatterings in the Lippmann-Schwinger approach

Takashi Inoue

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Abstract

We study the pion-nucleon P_33 and P_11 scattering, where the Delta and the Roper resonances are seen, respectively. We use the Lippmann-Schwinger equation extended to couple to a one-body state, and investigate nature of these resonances by taking and omitting a one-baryon state into account. We see validity and puzzle of the standard quark model interpretation, for the Delta and the Roper resonances, respectively.

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Takashi Inoue. 2007-10-16. Pion-nucleon P_33 and P_11 scatterings in the Lippmann-Schwinger approach. https://arxiv.org/abs/0710.3026

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