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dc.date.accessioned 2022-07-04T13:19:20Z
dc.date.available 2022-07-04T13:19:20Z
dc.date.issued 2003
dc.identifier.uri http://sedici.unlp.edu.ar/handle/10915/138779
dc.description.abstract The 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 en
dc.format.extent 719-734 es
dc.language en es
dc.subject Lagrangian model es
dc.subject analytic S-matrix theory es
dc.subject electromagnetic gauge invariance es
dc.title Unstable Particles, Gauge Invariance and the Δ++ Resonance Parameters en
dc.type Articulo es
sedici.identifier.other doi:10.1023/a:1025692722386 es
sedici.identifier.issn 0015-9018 es
sedici.identifier.issn 1572-9516 es
sedici.creator.person López Castro, Gabriel es
sedici.creator.person Mariano, Alejandro Edgardo es
sedici.subject.materias Física es
sedici.subject.materias Ciencias Exactas es
sedici.description.fulltext true es
mods.originInfo.place Departamento de Física es
sedici.subtype Articulo es
sedici.rights.license Creative Commons Attribution 4.0 International (CC BY 4.0)
sedici.rights.uri http://creativecommons.org/licenses/by/4.0/
sedici.description.peerReview peer-review es
sedici.relation.journalTitle Foundations of Physics es
sedici.relation.journalVolumeAndIssue vol. 33, no. 5 es


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Creative Commons Attribution 4.0 International (CC BY 4.0) Excepto donde se diga explícitamente, este item se publica bajo la siguiente licencia Creative Commons Attribution 4.0 International (CC BY 4.0)