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Filtering by: Subject Pion-nucleon interactions

Self-consistent relativistic model for pion-nucleon scattering

Creator:

Wu, Huachuan

Abstract:

We introduce a relativistic model for pion-nucleon scattering which includes an elementary delta dressed by its decay. Crossing-symmetric single-particle exchange is augmented by parametrized multiple-scattering interactions, with covariant sideways form factors in both 3- and 4-field vertices. Causality is enforced by dispersion relations. Unitary fits to observed on-shell amplitudes are...

Resource Type:

Dissertation
Pion-nucleon interactions in the chiral color dielectric model

Creator:

Lu, Dinghui

Resource Type:

Dissertation
Contribution from two on-shell pion exchange in nucleon-nucleon scattering

Creator:

Kheaomaingam, Nupan

Abstract:

We used recent phenomenological form factors to calculate the effect of on-shell two-pion exchange in nucleon-nucleon scattering below the two-pion production threshold. As expected, the contributions of partial wave amplitudes are all negligible. We also noticed that the relativistic spin-operator decomposition of the scattering amplitude is not unique at certain...

Resource Type:

Dissertation