One pion production in neutrino-nucleon scattering and the different parameterizations of the weak N → Δ vertex
The N → Δ weak vertex provides an important contribution to the one pion production in neutrino-nucleon and neutrino-nucleus scattering for πN invariant masses below 1.4 GeV. Beyond its interest as a tool in neutrino detection and their background analyses, one pion production in neutrino-nucleon sc...
| Autores: | , , |
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| Formato: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2014 |
| País: | Argentina |
| Recursos: | Universidad Nacional de La Plata |
| Repositorio: | SEDICI (UNLP) |
| Idioma: | inglés |
| OAI Identifier: | oai:sedici.unlp.edu.ar:10915/85399 |
| Acesso em linha: | http://sedici.unlp.edu.ar/handle/10915/85399 |
| Access Level: | acceso abierto |
| Palavra-chave: | Física Effective models Neutrino scattering Δ resonance |
| Resumo: | The N → Δ weak vertex provides an important contribution to the one pion production in neutrino-nucleon and neutrino-nucleus scattering for πN invariant masses below 1.4 GeV. Beyond its interest as a tool in neutrino detection and their background analyses, one pion production in neutrino-nucleon scattering is useful to test predictions based on the quark model and other internal symmetries of strong interactions. Here we try to establish a connection between two commonly used parameterizations of the weak N → Δ vertex and form factors (FF) and we study their effects on the determination of the axial coupling C A 5 (0), the common normalization of the axial FF, which is predicted to hold 1.2 by using the PCAC hypothesis. Predictions for the νμp → μ-pπ+ total cross sections within the two approaches, which include the resonant Δ++ and other background contributions in a coherent way, are compared to experimental data. |
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