| dc.creator | López Castro, Gabriel | |
| dc.creator | Mariano, Alejandro Edgardo | |
| dc.date | 2003 | |
| dc.date | 2022-07-04T13:19:20Z | |
| dc.date.accessioned | 2023-07-15T04:43:04Z | |
| dc.date.available | 2023-07-15T04:43:04Z | |
| dc.identifier | http://sedici.unlp.edu.ar/handle/10915/138779 | |
| dc.identifier | issn:0015-9018 | |
| dc.identifier | issn:1572-9516 | |
| dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/7470617 | |
| dc.description | 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 | |
| dc.description | Departamento de Física | |
| dc.format | application/pdf | |
| dc.format | 719-734 | |
| dc.language | en | |
| dc.rights | http://creativecommons.org/licenses/by/4.0/ | |
| dc.rights | Creative Commons Attribution 4.0 International (CC BY 4.0) | |
| dc.subject | Física | |
| dc.subject | Ciencias Exactas | |
| dc.subject | Lagrangian model | |
| dc.subject | analytic S-matrix theory | |
| dc.subject | electromagnetic gauge invariance | |
| dc.title | Unstable Particles, Gauge Invariance and the Δ++ Resonance Parameters | |
| dc.type | Articulo | |
| dc.type | Articulo | |
