Dynamical model for correlated two-pion exchange in the pion-nucleon interaction

Journal Article · Wed Mar 01 04:00:00 EST 1995 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.51.1374· OSTI ID:6546405

Schuetz, C; Holinde, K; Speth, J ^[1]; Pearce, B C ^[2]; Durso, J W ^[3]

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1. Institut fuer Kernphysik, Forschungszentrum Juelich GmbH, D-52425 Juelich (Germany)
2. Department of Physics and Mathematical Physics, The University of Adelaide, Adelaide 5005 (Australia)
3. Department of Physics, Mount Holyoke College, South Hadley, Massachusetts 01075 (United States)

A microscopic model for the [ital N[bar N]][r arrow][pi][pi] process is presented in the meson exchange framework, which in the pseudophysical region agrees with available quasiempirical information. The scalar ([sigma]) and vector ([rho]) 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.

• OSTI ID: 6546405
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 51:3; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

662340 -- Hadron Interactions-- (1992-)
663110* -- General & Average Properties of Nuclei & Nuclear Energy Levels-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BOSONS
DIFFERENTIAL EQUATIONS
DISPERSION RELATIONS
ELEMENTARY PARTICLES
EQUATIONS
EXCHANGE INTERACTIONS
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
MESONS
PARTIAL DIFFERENTIAL EQUATIONS
PARTICLE INTERACTIONS
PION-NUCLEON INTERACTIONS
PIONS
PSEUDOSCALAR MESONS
SCALARS
SCHROEDINGER EQUATION
TENSORS
UNITARITY
VECTORS
WAVE EQUATIONS