A dynamical model for correlated two pion exchange in the pion-nucleon interaction

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Date

1995

Authors

Schutz, C.
Holinde, K.
Speth, J.
Pearce, B. C.
Durso, J. W.

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Journal article

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Physical Review C, 1995; 51(3):1374-1383

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C. Schütz, K. Holinde, J. Speth, B. C. Pearce and J. W. Durso

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Abstract

A microscopic model for the NN¯→ππ process is presented in the meson exchange framework, which in the pseudophysical region agrees with available quasiempirical information. The scalar (σ) and vector (ρ) piece of correlated two-pion exchange in the pion-nucleon interaction is then derived via dispersion integrals over the unitarity cut. Inherent ambiguities in the method and implications for the description of pion-nucleon scattering data are discussed.

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School of Chemistry and Physics : Physics and Mathematical Physics

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© 1995 The American Physical Society

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