dc.creatorLópez Castro, Gabriel
dc.creatorMariano, Alejandro Edgardo
dc.date2003
dc.date2022-07-04T13:19:20Z
dc.date.accessioned2023-07-15T04:43:04Z
dc.date.available2023-07-15T04:43:04Z
dc.identifierhttp://sedici.unlp.edu.ar/handle/10915/138779
dc.identifierissn:0015-9018
dc.identifierissn:1572-9516
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/7470617
dc.descriptionThe elastic and radiative π+p scattering are studied in the framework of an effective Lagrangian model for the Δ++ resonance and its interactions. The finite width effects of this spin-3/2 resonance are introduced in the scattering amplitudes through a complex mass scheme to respect electromagnetic gauge invariance. The resonant pole (Δ++) and background contributions (ρ0, σ, Δ, and neutron states) are separated according to the principles of the analytic S-matrix theory. The mass and width parameters of the Δ++ obtained from a fit to experimental data on the total cross section are in agreement with the results of a model-independent analysis based on the analytic S-matrix approach. The magnetic dipole moment determined from the radiative p+p scattering is mD++=(6.14 ± 0.51) nuclear magnetons
dc.descriptionDepartamento de Física
dc.formatapplication/pdf
dc.format719-734
dc.languageen
dc.rightshttp://creativecommons.org/licenses/by/4.0/
dc.rightsCreative Commons Attribution 4.0 International (CC BY 4.0)
dc.subjectFísica
dc.subjectCiencias Exactas
dc.subjectLagrangian model
dc.subjectanalytic S-matrix theory
dc.subjectelectromagnetic gauge invariance
dc.titleUnstable Particles, Gauge Invariance and the Δ++ Resonance Parameters
dc.typeArticulo
dc.typeArticulo


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