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Filtering by: Advisor Proteau, Philip J. Remove constraint Advisor: Proteau, Philip J. Subject Pion-nucleon interactions Remove constraint Subject: Pion-nucleon interactions

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  • 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
    Full Text:
    Abstract approved: Philip J. Siemens We introduce a relativistic model for pion-nucleon scattering which

  • 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
    Full Text:
    in Nucleon-Nucleon Scattering Abstract approved: Philip J. Siemens We used recent